The Anti-Atlas ( ar, الأطلس الصغير, shi, Aṭlas Mẓẓiyn), also known as Lesser Atlas or Little Atlas is a mountain range in

Morocco Morocco (),, ) officially the Kingdom of Morocco, is the westernmost country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to ...

, a part of the

Atlas Mountains The Atlas Mountains are a mountain range in the Maghreb in North Africa. It separates the Sahara Desert from the Mediterranean Sea and the Atlantic Ocean; the name "Atlantic" is derived from the mountain range. It stretches around through Moroc ...

in the northwest of

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

. The Anti-Atlas extends from the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

in the southwest toward the northeast, to the heights of

Ouarzazate Ouarzazate (; ar, ورزازات, Warzāzāt, ; ary, وارزازات, Wārzāzāt; shi, label= Berber, ⵡⴰⵔⵣⴰⵣⴰⵜ, Warzazat), nicknamed ''the door of the desert'', is a city and capital of Ouarzazate Province in the region of Dr� ...

and further east to the city of

Tafilalt Tafilalt or Tafilet (; ar, تافيلالت), historically Sijilmasa, is a region and the largest oasis in Morocco. Etymology The word "Tafilalt" is an Amazigh word and it means "Jug", which is specifically a pottery jar used to store water. H ...

, altogether a distance of approximately 500 km. The range borders on the

Sahara , photo = Sahara real color.jpg , photo_caption = The Sahara taken by Apollo 17 astronauts, 1972 , map = , map_image = , location = , country = , country1 = , ...

to the south."Anti-Atlas" (or Jebel Saghru), ''The Encyclopædia Britannica'', 1910. In some contexts, the Anti-Atlas is considered separate from the Atlas Mountains system, as the prefix "anti" (i.e. opposite) implies.

Geography

The summits of the Anti-Atlas reach average heights of , with a few peaks reaching higher. To the north lies a plateau at 1700–1800 m in height. To the south lie the Sahara highlands at approximately 700 m. On the heights of

, the

massif In geology, a massif ( or ) is a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term also refers to a ...

is cut through by the

Draa valley :''Dra is also the abbreviation for the constellation Draco.'' The Draa ( ber, Asif en Dra, ⴰⵙⵉⴼ ⴻⵏ ⴷⵔⴰ, ary, واد درعة, wad dərʿa; also spelled Dra or Drâa, in older sources mostly Darha or Dara) is Morocco's longest ...

, opening towards the south. The range is strongly fissured, particularly in a southerly direction. The Anti-Atlas area is a traditionally

Berber Berber or Berbers may refer to: Ethnic group * Berbers, an ethnic group native to Northern Africa * Berber languages, a family of Afro-Asiatic languages Places * Berber, Sudan, a town on the Nile People with the surname * Ady Berber (1913–196 ...

region, inhabited by the

Chleuh The Shilha people (, ), or Ishelhien, or Chleuh are a Berber subgroup primarily inhabiting the Anti Atlas, High Atlas, Sous Valley, and Soussi coastal regions of Morocco. Overview The Shilha people traditionally call themselves ''ishelhien''. T ...

group. It is sparsely inhabited and there are no large cities in the area. The main town is

Tafraoute Tafraout, also Tafraoute ( ar, تافراوت, Shilha language, Shilha ber, ⵜⴰⴼⵔⴰⵡⵜ) is a town in Tiznit Province, Souss-Massa region, Morocco, in the central part of the Anti-Atlas mountains. It had a population of 4,931 at the 20 ...

, which has been described as "Morocco's Berber heartland".Tafraoute: Morocco's Berber heartland
/ref> There are

cave paintings In archaeology, Cave paintings are a type of parietal art (which category also includes petroglyphs, or engravings), found on the wall or ceilings of caves. The term usually implies prehistoric art, prehistoric origin, and the oldest known are mor ...

in certain areas of the range.Alain Rodrigue, ''L'art rupestre au Maroc : les sites principaux.'' p. 19
/ref>

Subranges

The eastern prolongation of the Anti-Atlas is the

Jbel Saghro The Jbel Saghro or Djebel Sahrho ( ber, Adrar Saɣru, ar, جبل صغرو) is a mountain range in south- east Morocco. It is located south of the High Atlas and east of the Anti-Atlas in the northwest of Africa, northeast of Taliouine and southwes ...

range. The

Jbel Sirwa The Adrar Sirwa, also spelled Adrar Siroua, is a peak in the Anti-Atlas mountain range. It is an old stratovolcano that rises above sea level. References Atlas Mountains Stratovolcanoes Mountains of Morocco Volcanoes of Morocco {{M ...

is its northern prolongation, connecting with a section of the High Atlas range. The summit of Jbel Sirwa, of volcanic origin, reaches 3304 m. The Jbel Bani is a much lower range running along the southern side of the Anti Atlas. Siroua Amzdour

Origins

The basement rock of Africa (the

African plate The African Plate is a major tectonic plate that includes much of the continent of Africa (except for its easternmost part) and the adjacent oceanic crust to the west and south. It is bounded by the North American Plate and South American Plat ...

) was formed in the

Precambrian The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the ...

(approximately 450 to 550 million years ago), and is much older than the Atlas mountains. The Anti-Atlas range developed even later. A fraction of the

Avalonia Avalonia was a microcontinent in the Paleozoic era. Crustal fragments of this former microcontinent underlie south-west Great Britain, southern Ireland, and the eastern coast of North America. It is the source of many of the older rocks of Wester ...

microcontinent, the Anti-Atlas range formed in the

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

( 300 million years ago), as a result of continental collisions. North America, Europe and Africa were connected as part of two former continents,

Euramerica Laurasia () was the more northern of two large landmasses that formed part of the Pangaea supercontinent from around ( Mya), the other being Gondwana. It separated from Gondwana (beginning in the late Triassic period) during the breakup of Pan ...

and

Gondwana Gondwana () was a large landmass, often referred to as a supercontinent, that formed during the late Neoproterozoic (about 550 million years ago) and began to break up during the Jurassic period (about 180 million years ago). The final stages ...

, which ground against one another to create the former

Central Pangean Mountains The Central Pangean Mountains were an extensive northeast–southwest trending mountain range in the central portion of the supercontinent Pangaea during the Carboniferous, Permian and Triassic periods. They were formed as a result of collision b ...

. Evidence shows that the Anti-Atlas mountains were originally formed as part of the

Alleghenian orogeny The Alleghanian orogeny or Appalachian orogeny is one of the geological mountain-forming events that formed the Appalachian Mountains and Allegheny Mountains. The term and spelling Alleghany orogeny was originally proposed by H.P. Woodward in 195 ...

that also formed the

Appalachians The Appalachian Mountains, often called the Appalachians, (french: Appalaches), are a system of mountains in eastern to northeastern North America. The Appalachians first formed roughly 480 million years ago during the Ordovician Period. They ...

, formed when Gondwana (including Africa) and Euramerica (America) collided. There are indications they were once a chain of mountains far higher than the

Himalaya The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...

s are today. Valley of Ammeln

More recently, in the

Paleogene The Paleogene ( ; British English, also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period, geologic period and system that spans 43 million years from the end of the Cretaceous Period million yea ...

and

Neogene The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. ...

Periods (66 million to ~1.8 million years ago), the remaining mountain chains that today comprise the Atlas were uplifted as the land masses of Europe and Africa collided at the southern end of the

Iberian peninsula The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defi ...

. Erosion continued to reduce the Anti-Atlas range so that it is today less massive than the High Atlas range to the north.

Climate

In the Anti-Atlas, the precipitation annually is typically below 200 mm, while the climatic conditions on the north and west slopes are locally more wet and agriculturally favorable. Climatically, the mountains are separated from the

Mediterranean The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the e ...

's influence by the

High Atlas High Atlas, also called the Grand Atlas ( ar, الأطلس الكبير, Al-Aṭlas al-Kabīr; french: Haut Atlas; shi, ⴰⴷⵔⴰⵔ ⵏ ⴷⵔⵏ ''Adrar n Dern''), is a mountain range in central Morocco, North Africa, the highest part of t ...

to its north, and therefore they belong to the Saharan climate zone. The driest area is the

.Sud-Maroc; Massif aux paysages lunaires
/ref>

Flora

In the least dry areas to the west and the north, much of the land is covered with

thyme Thyme () is the herb (dried aerial parts) of some members of the genus ''Thymus'' of aromatic perennial evergreen herbs in the mint family Lamiaceae. Thymes are relatives of the oregano genus ''Origanum'', with both plants being mostly indigenou ...

rosemary ''Salvia rosmarinus'' (), commonly known as rosemary, is a shrub with fragrant, evergreen, needle-like leaves and white, pink, purple, or blue flowers, native plant, native to the Mediterranean Region, Mediterranean region. Until 2017, it was kn ...

and other low-water-demand plants, such as

argan ''Argania'' (Tashelhit: ⴰⵔⴳⴰⵏ ''Argan'') is a genus of flowering plants containing the sole species ''Argania spinosa'', known as argan, a tree endemic to the calcareous semidesert Sous valley of southwestern Morocco and to the regio ...

. The quilt-like cover is endangered by

overgrazing Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature res ...

, and in the south little but thorn shrubs remain. The transition to the desert is gradual towards the south. The

Moroccan citron The Moroccan citron ( he, אֶתְרוֹג מָרוֹקָנִי) is a true citron variety native to Assads, Morocco, which is still today its main center of cultivation. Sweet citron The Moroccan citron was described by the Moroccan professo ...

is growing there, and uses as

Jewish Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...

Etrog Etrog ( he, אֶתְרוֹג, plural: '; Ashkenazi Hebrew: ', plural: ') is the yellow citron or ''Citrus medica'' used by Jews during the week-long holiday of Sukkot as one of the four species. Together with the ''lulav'', ''hadass'', and '' ...

Human geography

The Anti-Atlas area is a traditionally

region, inhabited by the

group. It is sparsely inhabited and there are no large cities in the area. The main town is

, which has been described as "Morocco's Berber heartland." Often the distances between one village and another are great, without any human presence in between. There are

Neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts ...

in certain areas of the range. Anti-Atlas oasis village

The landscape of the Anti-Atlas is marked by picturesque

kasbah A kasbah (, also ; ar, قَـصَـبَـة, qaṣaba, lit=fortress, , Maghrebi Arabic: ), also spelled qasba, qasaba, or casbah, is a fortress, most commonly the citadel or fortified quarter of a city. It is also equivalent to the term ''alca ...

(small castles) in many places in the region. In former times, the kasbah was important as a place of shelter and as a supply depot for kinsmen. Close to these settlements,

terrace Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk a ...

d fields with

dry-stone Dry stone, sometimes called drystack or, in Scotland, drystane, is a building method by which structures are constructed from stones without any mortar to bind them together. Dry stone structures are stable because of their construction m ...

retaining wall Retaining walls are relatively rigid walls used for supporting soil laterally so that it can be retained at different levels on the two sides. Retaining walls are structures designed to restrain soil to a slope that it would not naturally keep to ...

s cover the landscape. However, increasingly houses are vacated and fields are left uncultivated. With the continued migration from the land, the irrigation systems necessary for agriculture are also decaying.

Panoramic view

Notes

References

* "Anti-Atlas" (or Jebel Saghru), ''The Encyclopædia Britannica'', 1910.

External links

* {{Authority control Mountain ranges of the Atlas Mountains Mountain ranges of Morocco