Mount Kilamanjaro
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Mount Kilimanjaro () is a
dormant Dormant, "sleeping", may refer to: Science *Dormancy Dormancy is a period in an organism's life cycle when growth, development, and (in animals) physical activity are temporarily stopped. This minimizes metabolic activity and therefore helps ...
volcano in Tanzania. It has three volcanic cones: Kibo, Mawenzi, and Shira. It is the highest mountain in Africa and the highest free-standing mountain above sea level in the world: above sea level and about above its plateau base. It is the highest volcano in Africa and the
Eastern Hemisphere The Eastern Hemisphere is the half of the planet Earth which is east of the prime meridian (which crosses Greenwich, London, United Kingdom) and west of the antimeridian (which crosses the Pacific Ocean and relatively little land from pole to pol ...
. Kilimanjaro is the fourth most topographically prominent peak on Earth. It is part of Kilimanjaro National Park and is a major hiking and climbing destination. Because of its shrinking glaciers and ice fields, which are projected to disappear between 2025 and 2035, it has been the subject of many scientific studies.


Toponymy

The origin of the name Kilimanjaro is not known, but a number of theories exist. European explorers had adopted the name by 1860 and reported that Kilimanjaro was the mountain's Kiswahili name. The 1907 edition of ''The Nuttall Encyclopædia'' also records the name of the mountain as Kilima-Njaro.
Johann Ludwig Krapf Johann Ludwig Krapf (11 January 1810 – 26 November 1881) was a German missionary in East Africa, as well as an explorer, linguist, and traveler. Krapf played an important role in exploring East Africa with Johannes Rebmann. They were the first ...
wrote in 1860 that Swahilis along the coast called the mountain Kilimanjaro. Although he did not offer any support, he claimed that Kilimanjaro meant either mountain of greatness or mountain of caravans. Under the latter meaning, ''kilima'' meant mountain and ''jaro'' meant caravans. Jim Thompson claimed in 1885, again without support, that the term Kilima-Njaro "has generally been understood to mean" the mountain (''kilima'') of greatness (''njaro''). He also suggested "though not improbably it may mean" the white mountain. ''Njaro'' is an ancient Kiswahili word for shining. Similarly, Krapf wrote that a chief of the Wakamba people, whom he visited in 1849, "had been to Jagga and had seen the ''Kima jajeu'', mountain of whiteness, the name given by the Wakamba to Kilimanjaro...." More correctly in the Kikamba language this would be ''kiima kyeu'', and this possible derivation has been popular with several investigators. Others have assumed that ''kilima'' is Kiswahili for mountain. The problem with this assumption is that ''kilima'' actually means hill and is, therefore, the
diminutive A diminutive is a root word that has been modified to convey a slighter degree of its root meaning, either to convey the smallness of the object or quality named, or to convey a sense of intimacy or endearment. A (abbreviated ) is a word-formati ...
of ''mlima'', the proper Kiswahili word for mountain. However, " is ... possible ... that an early European visitor, whose knowledge of iswahiliwas not extensive, changed ''mlima'' to ''kilima'' by analogy with the two Wachagga names: ''Kibo'' and ''Kimawenzi''." A different approach is to assume that the kileman part of Kilimanjaro comes from the Kichagga ''kileme'', which means that which defeats, or ''kilelema'', which means that which has become difficult or impossible. The jaro part would "then be derived from ''njaare'', a bird; or, according to other informants, a leopard; or, possibly from ''jyaro'', a caravan". Considering that the name Kilimanjaro has never been current among the Wachagga people, it is possible that the name was derived from Wachagga saying that the mountain was unclimbable, ''kilemanjaare'' or ''kilemajyaro'', and porters misinterpreting this as being the name of the mountain. In the 1880s, the mountain became a part of
German East Africa German East Africa (GEA; german: Deutsch-Ostafrika) was a German colony in the African Great Lakes region, which included present-day Burundi, Rwanda, the Tanzania mainland, and the Kionga Triangle, a small region later incorporated into Mozam ...
and was called Kilima-Ndscharo in German following the Kiswahili name components. On 6 October 1889, Hans Meyer reached the highest summit on the crater ridge of Kibo. He named it Kaiser-Wilhelm-Spitze (
Kaiser Wilhelm Kaiser Wilhelm is a common reference to two German emperors: * Wilhelm I, German Emperor (1797–1888) * Wilhelm II, German Emperor (1859–1941) Kaiser Wilhelm may also refer to: * Kaiser Wilhelm (baseball) (1874–1936), early 20th century bas ...
peak). That name was used until Tanzania was formed in 1964, when the summit was renamed Uhuru Peak, meaning freedom peak in Kiswahili.


Geology and geography

Kilimanjaro is a large dormant
stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...
composed of three distinct volcanic cones: Kibo, the highest; Mawenzi at ; and Shira, the lowest at . Mawenzi and Shira are
extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
, while Kibo is
dormant Dormant, "sleeping", may refer to: Science *Dormancy Dormancy is a period in an organism's life cycle when growth, development, and (in animals) physical activity are temporarily stopped. This minimizes metabolic activity and therefore helps ...
and could erupt again. Uhuru Peak is the highest summit on Kibo's crater rim. The Tanzania National Parks Authority, a Tanzanian government agency, and the United Nations Educational, Scientific and Cultural Organization lists the height of Uhuru Peak as , based on a British survey in 1952. The height has since been measured as in 1999, in 2008, and in 2014. A map of the Kibo cone on Mount Kilimanjaro was published by the British government's Directorate of Overseas Surveys (DOS) in 1964 based on aerial photography conducted in 1962 as the "Subset of Kilimanjaro, East Africa (Tanganyika) Series Y742, Sheet 56/2, D.O.S. 422 1964, Edition 1, Scale 1:50,000". Tourist mapping was first published by the Ordnance Survey in England in 1989 based on the original DOS mapping at a scale of 1:100,000, with contour intervals, as DOS 522. West Col Productions produced a map with tourist information in 1990, at a scale of 1:75,000, with contour intervals; it included inset maps of Kibo and Mawenzi on 1:20,000 and 1:30,000 scales respectively and with contour intervals. In recent years, numerous other maps have become available, of various qualities.


Volcanology

The volcanic interior of Kilimanjaro is poorly known because there has not been any significant erosion to expose the igneous strata that comprise the volcano's structure. Eruptive activity at the Shira centre commenced about 2.5 million years ago, with the last important phase occurring about 1.9 million years ago, just before the northern part of the edifice collapsed. Shira is topped by a broad plateau at , which may be a filled
caldera A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...
. The remnant caldera rim has been degraded deeply by erosion. Before the caldera formed and erosion began, Shira might have been between high. It is mostly composed of basic lavas, with some
pyroclastics Pyroclastic rocks (derived from the el, πῦρ, links=no, meaning fire; and , meaning broken) are clastic rocks composed of rock fragments produced and ejected by explosive volcanic eruptions. The individual rock fragments are known as pyroc ...
. The formation of the caldera was accompanied by lava emanating from ring fractures, but there was no large scale explosive activity. Two cones formed subsequently, the phonolitic one at the northwest end of the ridge and the
doleritic Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained ...
Platzkegel in the caldera centre. Both Mawenzi and Kibo began erupting about 1 million years ago. They are separated by the Saddle Plateau at elevation. The youngest dated rocks at Mawenzi are about 448,000 years old. Mawenzi forms a horseshoe-shaped ridge with pinnacles and ridges opening to the northeast, with a tower-like shape resulting from deep erosion and a mafic dike swarm. Several large
cirque A (; from the Latin word ') is an amphitheatre-like valley formed by glacial erosion. Alternative names for this landform are corrie (from Scottish Gaelic , meaning a pot or cauldron) and (; ). A cirque may also be a similarly shaped landform ...
s cut into the ring. The largest of these sits on top of the Great Barranco gorge. Also notable are the East and West Barrancos on the northeastern side of the mountain. Most of the eastern side of the mountain has been removed by erosion. Mawenzi has a
subsidiary peak A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used only for a ...
, Neumann Tower, . Kibo is the largest cone on the mountain and is more than wide at the Saddle Plateau altitude. The last activity here, dated to 150,000–200,000 years ago, created the current Kibo summit crater. Kibo still has gas-emitting fumaroles in its crater. Kibo is capped by an almost symmetrical cone with escarpments rising on the south side. These escarpments define a caldera caused by the collapse of the summit. Within this caldera is the Inner Cone and within the crater of the Inner Cone is the Reusch Crater, which the Tanganyika government in 1954 named after Gustav Otto Richard Reusch, upon his climbing the mountain for the 25th time (out of 65 attempts during his lifetime). The Ash Pit, deep, lies within the Reusch Crater. About 100,000 years ago, part of Kibo's crater rim collapsed, creating the area known as the
Western Breach As its name suggests, the Western Breach is a gap, formed by lava flow, on the western outer rim of Mount Kilimanjaro's main summit, Kibo. The Western Breach offers one of the shortest climbing routes A climbing route is a path by which a c ...
and the Great Barranco. An almost continuous layer of lava buries most older geological features, with the exception of exposed
strata In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as ei ...
within the Great West Notch and the Kibo Barranco. The former exposes intrusions of
syenite Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (< 5%). Some syenites contain larger proport ...
. Kibo has five main lava formations: * Phonotephrites and tephriphonolites of the Lava Tower group, on a
dyke Dyke (UK) or dike (US) may refer to: General uses * Dyke (slang), a slang word meaning "lesbian" * Dike (geology), a subvertical sheet-like intrusion of magma or sediment * Dike (mythology), ''Dikē'', the Greek goddess of moral justice * Dikes, ...
cropping out at , dated to 482,000 years ago. * Tephriphonolite to phonolite lavas "characterized by rhomb mega-phenocrysts of sodic feldspars" of the Rhomb Porphyry group, dated to 460,000–360,000 years ago. * Aphyric phonolite lavas, "commonly underlain by basal obsidian horizons", of the Lent group, dated to 359,000–337,000 years ago *
Porphyritic Porphyritic is an adjective used in geology to describe igneous rocks with a distinct difference in the size of mineral crystals, with the larger crystals known as phenocrysts. Both extrusive and intrusive rocks can be porphyritic, meaning all ...
tephriphonolite to phonolite lavas of the Caldera Rim group, dated to 274,000–170,000 years ago * Phonolite lava flows with aegirine phenocrysts, of the Inner Crater group, which represents the last volcanic activity on Kibo Kibo has more than 250 parasitic cones on its northwest and southeast flanks that were formed between 150,000 and 200,000 years ago and erupted picrobasalts, trachybasalts,
ankaramite Ankaramite is volcanic rock type of mafic composition. It is a dark porphyritic variety of basanite containing abundant pyroxene and olivine phenocrysts.https://dialnet.unirioja.es/descarga/articulo/281059.pdf Luis Enrique Ortiz Hernández, ''An ...
s, and
basanite Basanite () is an igneous, volcanic (extrusive) rock with aphanitic to porphyritic texture. It is composed mostly of feldspathoids, pyroxenes, olivine, and plagioclase and forms from magma low in silica and enriched in alkali metal oxides that s ...
s. They reach as far as
Lake Chala Lake Chala, also known as Lake Challa, is a crater lake that straddles the border between Kenya and Tanzania. The lake formed approximately 250,000 years ago. The lake is east of Mount Kilimanjaro, north of Taveta, Kenya, and east of Rombo Dis ...
and Taveta in the southeast and the Lengurumani Plain in the northwest. Most of these cones are well preserved, with the exception of the Saddle Plateau cones that were heavily affected by glacial action. Despite their mostly small size, lava from the cones has obscured large portions of the mountain. The Saddle Plateau cones are mostly cinder cones with terminal effusion of lava, while the Upper Rombo Zone cones mostly generated lava flows. All Saddle Plateau cones predate the last glaciation. According to reports gathered in the 19th century from the Maasai, Lake Chala on Kibo's eastern flank was the site of a village that was destroyed by an eruption.


Glaciers

Kibo's diminishing ice cap exists because Kilimanjaro is a little-dissected, massive mountain that rises above the
snow line The climatic snow line is the boundary between a snow-covered and snow-free surface. The actual snow line may adjust seasonally, and be either significantly higher in elevation, or lower. The permanent snow line is the level above which snow wil ...
. The cap is divergent and at the edges splits into individual glaciers. The central portion of the ice cap is interrupted by the presence of the Kibo crater. The summit glaciers and ice fields do not display significant horizontal movements because their low thickness precludes major deformation. Geological evidence shows five successive glacial episodes during the
Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ...
period, namely First (500,000 BP), Second (greater than 360,000 years ago to 240,000 BP), Third (150,000 to 120,000 BP), Fourth (also known as "Main") (20,000 to 17,000 BP), and Little (16,000 to 14,000 BP). The Third may have been the most extensive, and the Little appears to be statistically indistinguishable from the Fourth. A continuous ice cap covering approximately down to an elevation of covered Kilimanjaro during the
Last Glacial Maximum The Last Glacial Maximum (LGM), also referred to as the Late Glacial Maximum, was the most recent time during the Last Glacial Period that ice sheets were at their greatest extent. Ice sheets covered much of Northern North America, Northern Eur ...
in the Pleistocene epoch (the Main glacial episode), extending across the summits of Kibo and Mawenzi. Because of the exceptionally prolonged dry conditions during the subsequent Younger Dryas stadial, the ice fields on Kilimanjaro may have become extinct around 11,500 years BP.
Ice core An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier. Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ic ...
s taken from Kilimanjaro's Northern Ice Field (NIF) indicates that the glaciers there have a basal age of about 11,700 years, although an analysis of ice taken in 2011 from exposed vertical cliffs in the NIF supports an age extending only to 800 years BP. Higher precipitation rates at the beginning of the Holocene epoch (11,500 years BP) allowed the ice cap to reform. The glaciers survived a widespread drought during a three century period beginning around 4,000 years BP. In the late 1880s, the summit of Kibo was completely covered by an ice cap about in extent with outlet glaciers cascading down the western and southern slopes, and except for the inner cone, the entire caldera was buried. Glacier ice also flowed through the Western Breach. The slope glaciers retreated rapidly between 1912 and 1953, in response to a sudden shift in climate at the end of the 19th century that made them "drastically out of equilibrium", and more slowly thereafter. Their continuing demise indicates they are still out of equilibrium in response to a constant change in climate over the past century. In contrast to the persistent slope glaciers, the glaciers on Kilimanjaro's crater plateau have appeared and disappeared repeatedly during the Holocene epoch, with each cycle lasting a few hundred years. It appears that decreasing specific humidity instead of temperature changes has caused the shrinkage of the slope glaciers since the late 19th century. No clear warming trend at the elevation of those glaciers occurred between 1948 and 2005. Although air temperatures at that elevation are always below freezing, solar radiation causes melting on vertical faces. Vertical ice margin walls are a unique characteristic of the summit glaciers and a major place of the shrinkage of the glaciers. They manifest stratifications, calving, and other ice features. "There is no pathway for the plateau glaciers other than to continuously retreat once their vertical margins are exposed to solar radiation." The Kilimanjaro glaciers have been used for deriving ice core records, including two from the southern icefield. Based on this data, this icefield formed between 1,250 and 1,450 years BP. Almost 85 percent of the ice cover on Kilimanjaro disappeared between October 1912 and June 2011, with coverage decreasing from to . Between 1912 and 1953, there was about a 1.1 percent average annual loss of ice coverage. The average annual loss for 1953 to 1989 was 1.4 percent, while the loss rate for 1989 to 2007 was 2.5 percent. Of the ice cover still present in 2000, almost 40 percent had disappeared by 2011. Ice climber Will Gadd noticed differences between his 2014 and 2020 climbs. The glaciers are thinning in addition to losing areal coverage, and do not have active accumulation zones; retreat occurs on all glacier surfaces. Loss of glacier mass is caused by both melting and
sublimation Sublimation or sublimate may refer to: * ''Sublimation'' (album), by Canvas Solaris, 2004 * Sublimation (phase transition), directly from the solid to the gas phase * Sublimation (psychology), a mature type of defense mechanism * Sublimate of mer ...
. While the current shrinking and thinning of Kilimanjaro's ice fields appears to be unique within its almost twelve millennium history, it is contemporaneous with widespread glacier retreat in mid-to-low latitudes across the globe. In 2013, it was estimated that, at the current rate of global warming, most of the ice on Kilimanjaro will disappear by 2040 and "it is highly unlikely that any ice body will remain after 2060". A complete disappearance of the ice would be of only "negligible importance" to the water budget of the area around the mountain. The forests of Kilimanjaro, far below the ice fields, "are heessential water reservoirs for the local and regional populations".


Drainage

Kilimanjaro is drained by a network of rivers and streams, especially on the wetter and more heavily eroded southern side and especially above . Below that altitude, increased evaporation and human water usage reduces the water flows. The Lumi and
Pangani Pangani Town is a historic Swahili settlement located on the south eastern shore of Tanga Region, Tanzania. The town lies south of the city of Tanga, at the mouth of the Pangani River. It is the headquarters of the Pangani District. Administ ...
rivers drain Kilimanjaro on the eastern and southern sides, respectively.


IUGS geological heritage site

In respect of it being 'the highest stratovolcano of the East African Rift that maintains a glacier on its summit', the
International Union of Geological Sciences The International Union of Geological Sciences (IUGS) is an international non-governmental organization devoted to international cooperation in the field of geology. About The IUGS was founded in 1961 and is a Scientific Union member of the Inte ...
(IUGS) included 'The Pleistocene Kilimanjaro volcano' in its assemblage of 100 'geological heritage sites' around the world in a listing published in October 2022. The organisation defines an IUGS Geological Heritage Site as 'a key place with geological elements and/or processes of international scientific relevance, used as a reference, and/or with a substantial contribution to the development of geological sciences through history.'


Human history


African culture

Kilimanjaro is attested to in numerous stories by the peoples who live in East Africa. The Chagga, who traditionally lived on the southern and eastern slopes of the mountain, tell how a man named Tone once provoked a god, Ruwa, to bring famine upon the land. The people became angry at Tone, forcing him to flee. Nobody wanted to protect him but a solitary dweller who had stones that turned miraculously into cattle. The dweller bid that Tone never open the stable of the cattle. When Tone did not heed the warning and the cattle escaped, Tone followed them, but the fleeing cattle threw up hills to run on, including Mawenzi and Kibo. Tone finally collapsed on Kibo, ending the pursuit. Another Chagga legend tells of ivory-filled graves of elephants on the mountain, and of a cow named Rayli that produces miraculous fat from her tail glands. If a man tries to steal such a gland but is too slow in his moves, Rayli will blast a powerful snort and blow the thief down onto the plain.


Early records

The mountain may have been known to non-Africans since
antiquity Antiquity or Antiquities may refer to: Historical objects or periods Artifacts *Antiquities, objects or artifacts surviving from ancient cultures Eras Any period before the European Middle Ages (5th to 15th centuries) but still within the histo ...
. Sailors' reports recorded by Ptolemy mention a "moon mountain" and a spring lake of the Nile, which may indicate Kilimanjaro, although available historical information does not allow differentiation among others in East Africa like
Mount Kenya Mount Kenya (Kikuyu: ''Kĩrĩnyaga'', Kamba, ''Ki Nyaa'') is the highest mountain in Kenya and the second-highest in Africa, after Kilimanjaro. The highest peaks of the mountain are Batian (), Nelion () and Point Lenana (). Mount Kenya is locat ...
, the mountains of Ethiopia, the Virunga Mountains, the Rwenzori Mountains, and Kilimanjaro. Before Ptolemy, Aeschylus and Herodotus referred to "Egypt nurtured by the snows" and to a spring between two mountains, respectively. One of these mentions two tall mountains in the coastal regions with a valley with traces of fire between. Martín Fernández de Enciso, a Spanish traveller to Mombasa who obtained information about the interior from native caravans, said in his ''Summa de Geografía'' (1519) that west of Mombasa "stands the Ethiopian Mount Olympus, which is exceedingly high, and beyond it are the Mountains of the Moon, in which are the sources of the Nile".


European exploration

The German missionaries Johannes Rebmann of Mombasa and Johann Krapf were the first Europeans known to have attempted to reach the mountain. According to English geographer Halford Mackinder and English explorer Harry Johnston, Rebmann in 1848 was the first European to report the existence of Kilimanjaro. Hans Meyer has claimed that Rebmann first arrived in Africa in 1846 and quotes Rebmann's diary entry of 11 May 1848 as saying, In August 1861, the Prussian officer Baron
Karl Klaus von der Decken Baron Karl Klaus (Carl Claus) von der Decken (born 8 August 1833 in Kotzen, Brandenburg, Germany; died 2 October 1865 near Bardera, Somalia) was a German explorer of eastern Africa and the first European to attempt to climb Mount Kilimanjaro ...
accompanied by English geologist Richard Thornton made an attempt to climb Kibo but "got no farther than owing to the inclemency of the weather". In December 1862, von der Decken tried a second time together with Otto Kersten, reaching a height of . In August 1871, missionary
Charles New Midland Brick supplies building and construction materials including bricks, concrete blocks, pavers, retaining walls, roof tiles and stone cladding. Products are supplied to customers in Australia, New Zealand and Asia. Midland Brick headquart ...
became the "first European to reach the equatorial snows" on Kilimanjaro at an elevation of slightly more than . In June 1887, the Hungarian Count Sámuel Teleki and the Austrian Lieutenant Ludwig von Höhnel made an attempt to climb the mountain. Approaching from the saddle between Mawenzi and Kibo, Höhnel stopped at , but Teleki continued until he reached the snow at . Later in 1887, the German geology professor Hans Meyer reached the lower edge of the ice cap on Kibo, where he was forced to turn back because he lacked the equipment needed to progress across the ice. The following year, Meyer planned another attempt with Oscar Baumann, a
cartographer Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an im ...
, but the mission was aborted after the pair were held hostage and ransomed during the Abushiri Revolt. In the autumn of 1888, the American naturalist Abbott and the German explorer Otto Ehrenfried Ehlers approached the summit from the northwest. While Abbott turned back earlier, Ehlers at first claimed to have reached the summit rim, but after severe criticism of the claim, withdrew it. In 1889, Meyer returned to Kilimanjaro with the Austrian mountaineer Ludwig Purtscheller for a third attempt. This attempt was based on the establishment of several campsites with food supplies so that multiple attempts at the top could be made without having to descend too far. Meyer and Purtscheller pushed to near the crater rim on 3 October but turned back exhausted from hacking footsteps in the icy slope. Three days later, they reached the highest summit, on the southern rim of the crater. They were the first to confirm that Kibo has a crater. After descending to the saddle between Kibo and Mawenzi, Meyer and Purtscheller attempted to climb the more technically challenging Mawenzi but could only reach the top of Klute Peak, a subsidiary peak, before retreating due to illness. On 18 October, they reascended Kibo to enter and study the crater, cresting the rim at Hans Meyers Notch. In total, Meyer and Purtscheller spent 16 days above during their expedition. They were accompanied in their high camps by Mwini Amani of
Pangani Pangani Town is a historic Swahili settlement located on the south eastern shore of Tanga Region, Tanzania. The town lies south of the city of Tanga, at the mouth of the Pangani River. It is the headquarters of the Pangani District. Administ ...
, who cooked and supplied the sites with water and firewood. The first ascent of the highest summit of Mawenzi was made on 29 July 1912, by the German climbers
Eduard Hans Oehler Eduard Model Accessories is a Czech manufacturer of plastic models and finescale model accessories. Formed in 1989 in the city of Most, Eduard began in a rented cellar as a manufacturer of photoetched brass model components. Following the s ...
and
Fritz Klute Fritz originated as a German nickname for Friedrich, or Frederick (''Der Alte Fritz'', and ''Stary Fryc'' were common nicknames for King Frederick II of Prussia and Frederick III, German Emperor) as well as for similar names including Fridolin ...
, who named it Hans Meyer Peak. Oehler and Klute went on to make the third-ever ascent of Kibo, via the Drygalski Glacier, and descended via the Western Breach. In 1989, the organizing committee of the 100-year celebration of the first ascent decided to award posthumous certificates to the African porter-guides who had accompanied Meyer and Purtscheller. One person in pictures or documents of the 1889 expedition was thought to match a living inhabitant of
Marangu Marangu is a town located in Kilimanjaro Region. it is divided into Marangu East and Marangu west each with its own village, its one of the famous places in Tanzania recognized as one of the main gate for climbing Mount Kilimanjaro. it is also ...
, Yohani Kinyala Lauwo. Lauwo did not know his own age, nor remember Meyer or Purtscheller. He did recall joining a Kilimanjaro expedition involving a Dutch doctor who lived near the mountain, and that he did not wear shoes during the climb. Lauwo claimed that he had climbed the mountain three times before the beginning of World War I. The committee concluded that he had been a member of Meyer's team and therefore must have been born around 1871. Lauwo died on 10 May 1996, 107 years after the first ascent. It is sometimes suggested that he was a co-first-ascendant of Kilimanjaro.


Fauna and flora


Animals

Large animals are rare on Kilimanjaro and are more frequent in the forests and lower parts of the mountain.
Elephants Elephants are the largest existing land animals. Three living species are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. They are the only surviving members of the family Elephantidae and ...
and Cape buffaloes are among the animals that can be potentially hazardous to trekkers.
Bushbuck The Cape bushbuck (''Tragelaphus sylvaticus'') is a common and a widespread species of antelope in sub-Saharan Africa.Wronski T, Moodley Y. (2009)Bushbuck, harnessed antelope or both? ''Gnusletter'', 28(1):18-19. Bushbuck are found in a wide rang ...
s,
chameleon Chameleons or chamaeleons (family Chamaeleonidae) are a distinctive and highly specialized clade of Old World lizards with 202 species described as of June 2015. The members of this family are best known for their distinct range of colors, bein ...
s, dik-diks, duikers, mongooses, sunbirds, and warthogs have also been reported. Zebras, leopards and
hyena Hyenas, or hyaenas (from Ancient Greek , ), are feliform carnivoran mammals of the family Hyaenidae . With only four extant species (each in its own genus), it is the fifth-smallest family in the Carnivora and one of the smallest in the clas ...
s have been observed sporadically on the Shira plateau. Specific species associated with the mountain include the
Kilimanjaro shrew The Kilimanjaro shrew (''Crocidura monax'') is a species of mammal in the family Soricidae. It is found in Kenya and Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country ...
and the chameleon ''
Kinyongia tavetana ''Kinyongia tavetana'' (common names: Kilimanjaro two-horned chameleon, Dwarf Fischer's chameleon) is a chameleon in the genus ''Kinyongia''. It is native to southern Kenya and northern Tanzania. Its type locality is Mount Kilimanjaro, but it ...
''.


Vegetation

Natural forests cover about on Kilimanjaro. In the foothill area, maize, beans,
sunflower The common sunflower (''Helianthus annuus'') is a large annual forb of the genus ''Helianthus'' grown as a crop for its edible oily seeds. Apart from cooking oil production, it is also used as livestock forage (as a meal or a silage plant), as ...
s and, on the western side, wheat are cultivated. There are remnants of the former savanna vegetation with ''
Acacia ''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...
'', '' Combretum'', '' Terminalia'' and '' Grewia''. Between and , coffee appears as part of the " Chagga home gardens"
agroforestry Agroforestry is a land use management system in which trees or shrubs are grown around or among crops or pastureland. Trees produce a wide range of useful and marketable products from fruits/nuts, medicines, wood products, etc. This intentional ...
. Native vegetation at this altitude range (''
Strombosia ''Strombosia'' is a plant genus of about 10 species in the family Olacaceae. It has also been classified in the family Strombosiaceae. The generic name is from the Greek ', meaning "pear-shaped", referring to the fruit. Description ''Strombosia'' ...
'', '' Newtonia'', and '' Entandrophragma'') is limited to inaccessible valleys and gorges and is different from vegetation at higher altitudes. On the southern slope, montane forests first contain ''
Ocotea usambarensis ''Ocotea usambarensis'' is a species of ''Ocotea'' (family Lauraceae), native to eastern Africa in Kenya, Tanga Region of Tanzania, and locally in Uganda, where it occurs at 1600–2600 m altitude in high rainfall montane cloud forest. Common ...
'' as well as ferns and
epiphyte An epiphyte is an organism that grows on the surface of a plant and derives its moisture and nutrients from the air, rain, water (in marine environments) or from debris accumulating around it. The plants on which epiphytes grow are called phoroph ...
s; farther up in
cloud forest A cloud forest, also called a water forest, primas forest, or tropical montane cloud forest (TMCF), is a generally tropical or subtropical, evergreen, montane, moist forest characterized by a persistent, frequent or seasonal low-level cloud c ...
s '' Podocarpus latifolius'', '' Hagenia abyssinica'' and ''
Erica excelsa ''Erica ventricosa'' is a species of plant in the family Ericaceae native to the Afrotropics. Etymology The scientific name of this species is derived from the Latin word ''ventricosus'', which means swollen or inflated. Its common names are Fra ...
'' grow, as well as fog-dependent mosses. On the drier northern slopes
olive The olive, botanical name ''Olea europaea'', meaning 'European olive' in Latin, is a species of small tree or shrub in the family Oleaceae, found traditionally in the Mediterranean Basin. When in shrub form, it is known as ''Olea europaea'' ...
, '' Croton''-'' Calodendrum'', ''
Cassipourea ''Cassipourea'' is a genus of flowering plants in the family Rhizophoraceae. There are about 40 species. The genus is divided into several subgenera, based mainly on the structure of the flowers.Kenfack, D. (2011)''Cassipourea atanganae'' sp. nov ...
'', and '' Juniperus'' form forests in order of increasing altitude. Between and lie '' Erica'' bush and heathlands, followed by '' Helichrysum'', until . Neophytes have been observed, including '' Poa annua''. Records from the Maundi crater at indicate that the vegetation of Kilimanjaro has varied over time. Forest vegetation retreated during the Last Glacial Maximum and the ericaceous vegetation belt lowered by between 42,000 and 30,000 years ago because of the drier and colder conditions. The Tussock Grassland is an area on the slopes of Mount Kilimanjaro that contains many unique species of vegetation, such as the water holding cabbage.


Climate

The climate of Kilimanjaro is influenced by the height of the mountain, which allows the simultaneous influence of the equatorial trade winds and the high altitude anti-trades, and by the isolated position of the mountain. Kilimanjaro has daily upslope and nightly downslope winds, a regimen stronger on the southern than the northern side of the mountain. The flatter southern flanks are more extended and affect the atmosphere more strongly. Kilimanjaro has two distinct rainy seasons, one from March to May and another around November. The northern slopes receive much less rainfall than the southern ones. The lower southern slope receives annually, rising to at altitude and peaking "partly over" in the forest belt at . In the alpine zone, annual precipitation decreases to . The average temperature in the summit area is approximately . Nighttime surface temperatures on the Northern Ice Field (NIF) fall on average to , with an average daytime high of . During nights of extreme
radiational cooling In the study of heat transfer, radiative cooling is the process by which a body loses heat by thermal radiation. As Planck's law describes, every physical body spontaneously and continuously emits electromagnetic radiation. Radiative cooling ha ...
, the NIF can cool to as low as . Snowfall can occur at any time of year but is mostly associated with northern Tanzania's two rainy seasons. Precipitation in the summit area occurs principally as snow and
graupel Graupel (; ), also called soft hail, hominy snow, or snow pellets, is precipitation that forms when supercooled water droplets in air are collected and freeze on falling snowflakes, forming balls of crisp, opaque rime. Graupel is distinct from ...
of per year and ablates within days or years.


Climatic zones

* Bushland / Lower Slope:, 800 m – 1,800 m (2,600 ft – 5,900 ft); * Rainforest: 1,800 m – 2,800 m (5,900 ft – 9,200 ft); * Heather / Moorland: 2,800 m – 4,000 m (9,200 ft – 13,100 ft); * Alpine Desert: 4,000 m – 5,000 m (13,100 ft– 16,400 ft); * Arctic: 5,000 m – 5,895 m (16,400 ft – 19,300 ft).


Tourism industry

Kilimanjaro National Park generated US$51 million in revenue in 2013, the second-most of any Tanzanian national park. The Tanzania National Parks Authority reported that the park recorded 57,456 tourists during the 2011–12 budget year, of whom 16,425 hiked the mountain; the park's General Management Plan specifies an annual capacity of 28,470. The mountain hikers generated irregular and seasonal jobs for about 11,000 guides, porters, and cooks in 2007. Concerns have been raised about their poor working conditions and inadequate wages of these workers. Due to Kilimanjaro National Park's popularity as a destination, the Tanzanian government have invested in road infrastructure to improve accessibility. In Tanzania, Kilimanjaro International Airport also serves as an important transportation hub. There are seven official trekking routes by which to ascend and descend Kilimanjaro: Lemosho, Lemosho Western-Breach, Machame, Marangu, Mweka, Rongai, Shira, and Umbwe. The Machame route can be completed in six or seven days, Lemosho in six to eight, and the Northern Circuit routes in seven or more days. The Lemosho Route can also be continued via the Western-Breach, summitting via the western side of the mountain. The Western-Breach is more secluded and avoids the 6-hour midnight ascent to the summit (like other routes). The Rongai is the easiest of the camping routes. The Marangu is also relatively easy, if frequently busy; accommodation is in shared huts. The Lemosho Western-Breach Route commences on the western side of Kilimanjaro at Lemosho and continues to the summit via the Western-Breach Route.


Climbing records

The oldest person to climb Mount Kilimanjaro is Anne Lorimor, aged 89 years and 37 days, who reached Uhuru Peak at 3:14 p.m. local time on 18 July 2019. The oldest man to summit is American Fred Dishelhorst, who reached the top on 19 July 2017 at the age of 88 years old. The second oldest man to summit the mountain is the American Robert Wheeler, who was 85 years and 201 days when he summited on 2 October 2014. Maxwell J. Ojerholm of Massachusetts, USA, reached Uhuru Peak, the true summit, unassisted, at the age of ten years, on July 4, 2009, taking the difficult Machame Route. Colin M. Barker of Missouri, USA, later completed the same route at the age of ten years on December 22, 2020. Theodore Margaroli from London, age 10, reached the summit unassisted by the Western Breach, the hardest but most scenic route, in 2019. Despite an age-limit of 10 years for a climbing permit, Keats Boyd from Los Angeles reached the summit on 21 January 2008 at the age of 7. This record was equaled by Montannah Kenney from Texas in March 2018. The fastest ascent and the fastest round trip have been recorded by the Swiss-Ecuadorian mountain guide Karl Egloff. On 13 August 2014, after guiding a party to the summit the previous days, he ran from Umbwe Gate to the top in 4 hours and 56 minutes and returned to the Mweka Gate at {{convert, 1630, m, ft in a total time of 6 hours, 42 minutes and 24 seconds.Route: Kilimanjaro
{{Webarchive, url=https://web.archive.org/web/20181209124202/https://fastestknowntime.com/route/kilimanjaro-tanzania , date=9 December 2018 at fastestknowntime.com
Previous records, using the same route, were held by Spanish mountain runner Kílian Jornet (ascent in 5:23:50, round trip 7:14 on 29 September 2010) and by Tanzanian guide Simon Mtuy (an unsupported round trip in 9:21 on 22 February 2006).{{cite web , url=http://www.climbkilimanjaroguide.com/kilimanjaro-facts/#kilimanjaro-records , title=Amazing Kilimanjaro Records , publisher=Climb Kilimanjaro Guide , work=Mount Kilimanjaro Facts , access-date=16 July 2015 , archive-url=https://web.archive.org/web/20150717020932/http://www.climbkilimanjaroguide.com/kilimanjaro-facts/#kilimanjaro-records , archive-date=17 July 2015 , url-status=dead , df=dmy-all The female round trip record is held by Fernanda Maciel from Brazil in a time of 10 hours and 6 minutes. Her ascent time of 7:08 was broken on 23 February 2018 by the Danish ultramarathon runner Kristina Schou Madsen with a time of 6:52:54 from Mweka Gate. Several climbs by disabled people have drawn attention. Wheelchair user Bernard Goosen from South Africa scaled Kilimanjaro in six days in 2007. In 2012, Kyle Maynard who has no forearms or lower legs, crawled unassisted to the summit of Mount Kilimanjaro. In 2020, a team featuring two double above-knee amputees,
Hari Budha Magar Hari Budha Magar is a Nepalese double above-knee amputee and record-breaking mountaineer. In 2017, he became the first double above-knee amputee (DAK) to summit a mountain taller than 6,000m (Mera Peak, 6,476m). Early life Magar was born in ...
and Justin Oliver Davis, summited Kilimanjaro. It took them six days to cover the {{convert, 56, km, adj=on distance to the summit.


Safety

Though the climb is not technically as challenging as the Himalayas or Andes, the high elevation, low temperature, and occasional high winds can make Kilimanjaro a difficult trek. Acclimatization is required, and even experienced and physically fit trekkers may suffer some degree of altitude sickness.{{Cite journal , author1=Muza, SR , author2=Fulco, CS , author3=Cymerman, A , title=Altitude Acclimatization Guide , journal=US Army Research Inst. Of Environmental Medicine Thermal and Mountain Medicine Division Technical Report , issue=USARIEM-TN-04-05 , year=2004 , url=http://archive.rubicon-foundation.org/xmlui/handle/123456789/7616 , access-date=2015-07-16 , archive-url=https://web.archive.org/web/20160214202657/http://archive.rubicon-foundation.org/xmlui/handle/123456789/7616 , archive-date=2016-02-14 , url-status=usurped A study of people attempting to reach the summit of Kilimanjaro in July and August 2005 found that 61.3 percent succeeded and 77 percent experienced acute mountain sickness (AMS).{{cite journal , url=http://www.nickkalson.com/Papers/Kili_WEM.pdf , last1=Davies , first1=Andrew J. , last2=Kalson , first2=Nicholas S. , last3=Stokes , first3=Suzy , last4=Earl , first4=Mark D. , last5=Whitehead , first5=Adam G. , last6=Frost , first6=Hannah , last7=Tyrell-Marsh , first7=Ian , last8=Naylor , first8=Jon , title=Determinants of Summiting Success and Acute Mountain Sickness on Mt Kilimanjaro (5895 m) , journal=Wilderness & Environmental Medicine , volume=20 , issue=4 , pages=311–7 , year=2009 , issn=1080-6032 , doi=10.1580/1080-6032-020.004.0311 , pmid=20030437 , s2cid=13322264 , access-date=2015-07-28 , archive-url=https://web.archive.org/web/20151208062905/http://www.nickkalson.com/Papers/Kili_WEM.pdf , archive-date=2015-12-08 , url-status=live A retrospective study of 917 persons who attempted to reach the summit via the Lemosho or Machame routes found that 70.4 percent experienced AMS, defined in this study to be headache, nausea, diarrhea, vomiting, or loss of appetite. Kilimanjaro's summit is well above the altitude at which life-threatening high altitude pulmonary edema (HAPE) or high altitude cerebral edema (HACE), the most severe forms of AMS, can occur.{{Cite journal , author1=Cymerman, A , author2=Rock, PB , title=Medical Problems in High Mountain Environments. A Handbook for Medical Officers , publisher=US Army Research Inst. of Environmental Medicine Thermal and Mountain Medicine Division Technical Report , volume=USARIEM-TN94-2 , url=http://archive.rubicon-foundation.org/xmlui/handle/123456789/7976 , access-date=5 March 2009 , archive-url=https://web.archive.org/web/20120207062927/http://archive.rubicon-foundation.org/xmlui/handle/123456789/7976 , archive-date=2012-02-07 , url-status=usurped These health risks are increased substantially by excessively fast climbing schedules motivated by high daily national park fees, busy holiday travel schedules, and the lack of permanent shelter on most routes. The six-day Machame route, which involves one day of "climbing high" to Lava Tower (15,190 ft) and "sleeping low" at Barranco Camp (13,044 ft), may delay the onset of AMS but does not ultimately prevent its occurrence. Falls on steep portions of the mountain and rock slides have killed trekkers. For this reason, the route via the
Arrow Glacier Arrow Glacier is located near the summit of Mount Kilimanjaro in Tanzania, on the west slope of the peak and is a small remnant of an icecap which once crowned the summit of Mount Kilimanjaro. The glacier is situated at an elevation of between . Ar ...
was closed for several years, reopening in December 2007. The improper disposal of human waste on the mountain environment has created a health hazard, necessitating the boiling of all water. According to the Kilimanjaro Christian Medical Centre in Moshi, 25 people died from January 1996 to October 2003 while climbing the mountain. Seventeen were female and eight were male, ranging in age from 29 to 74. Fourteen died from advanced high altitude illness, including one with HACE, five with HAPE, and six with both HACE and HAPE. The remaining eleven deaths resulted from "trauma (3), myocardial infarction (4), pneumonia (2), cardio-pulmonary failure of other underlying cause (1), and acute appendicitis (1). The overall mortality rate was an 13.6 per 100,000 climbers." File:Kili warning signs px1000.jpg, Caution signs at the Machamé trailhead. File:UhuruPeak.jpg, Sign at Uhuru peak, indicating to trekkers that they have reached the top. File:Hans Meyer memorial.jpg, Memorial recognizing the German Hans Meyer as the first European to "conquer" Kilimanjaro File:Uhuru Peak Mt. Kilimanjaro 1.JPG, Kilimanjaro's summit, Uhuru peak


Special events

* According to the Tanzania National Parks Authority, the first wedding performed on the mountain below the summit took place on 21 September 2014, when an American couple exchanged vows at Shira 2 Camp. In 2011, a couple exchanged their vows at the summit. * On 26 September 2014, a new world record for the highest-ever cricket match was set when a group of international cricketers played on a flat crater on the mountain at an elevation of {{convert, 5730, m.{{cite web , date=26 September 2014 , title=Cricketers play on Kilimanjaro to set new world record , url=https://www.bbc.co.uk/news/world-africa-29375679 , newspaper=BBC News , access-date=29 September 2014 , archive-url=https://web.archive.org/web/20140929044440/http://www.bbc.co.uk/news/world-africa-29375679 , archive-date=29 September 2014 , url-status=live , df=dmy-all


See also

*
Balletto Glacier Balletto Glacier is near the summit of Mount Kilimanjaro in Tanzania, on the southwest slope of the peak and is a small remnant of an icecap which once crowned the top of Mount Kilimanjaro. The glacier is situated at an elevation of between . Balle ...
*
Barranco Glacier Barranco Glacier (once known as the Great Barranco Glacier) is near the summit of Mount Kilimanjaro in Tanzania, on the southwest slope of the peak and is a small remnant of an icecap which once crowned the top of Mount Kilimanjaro. The glacier is ...
* Credner Glacier * Furtwängler Glacier * Great Penck Glacier * List of volcanoes in Tanzania * Little Penck Glacier * Rebmann Glacier * Sacred mountains * Southeast Africa


References

{{Reflist, 30em, refs= {{cite web , url = http://www.ntz.info/gen/b00769.html , title = The Meaning of Kilimanjaro , author = Hutchinson, J. A. , year = 1965 , work = Department of Language and Linguistics , publisher = University College , location = Dar Es Salaam , access-date = 2007-04-25 , archive-url = https://web.archive.org/web/20071006111206/http://www.ntz.info/gen/b00769.html , archive-date = 2007-10-06 , url-status = live


External links

{{Sister project links , commons= Kilimanjaro , wikt=no , q=no, b=no , n=no , s=no , v=no , species=no , d=Q7296 , display=Mount Kilimanjaro , voy=Mount Kilimanjaro * {{cite gvp, name=Kilimanjaro, vn=222150, access-date=2021-06-24
Mount Kilimanjaro National Park

NASA Earth Explorer page

Weather forecast for Mount Kilimanjaro (19,565 feet)


{{Webarchive, url=https://web.archive.org/web/20110215100701/http://www.kilimanjaro.cc/glacial-recession.htm , date=15 February 2011
Mount Kilimanjaro live webcam



Aerial photographs of Mount Kilimanjaro, 1937–38

Kilimanjaro
{{Seven Summits {{Volcanic Seven Summits {{Seven Third Summits, state=collapsed {{Authority control Kilimanjaro Kilimanjaro Geography of Kilimanjaro Region Kilimanjaro Moshi, Tanzania Seven Summits Kilimanjaro Kilimanjaro Volcanoes of the Great Rift Valley Important Bird Areas of Tanzania Pleistocene stratovolcanoes First 100 IUGS Geological Heritage Sites