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Anou Boussouil
Anou Boussouil (in English "Great Chasm") is a limestone karst cave located in the mountains of Djurdjura, Algeria. The cave is long and deep. The entrance to the cave is up the mountainside. During the springtime rainy season, melting snow pours through a channel leading directly to the cave mouth, continuing the process of erosion. This distinguishes it from other caves in the Djurdjura range, which are inactive and no longer being enlarged through erosion. The cave was first scientifically explored in 1933 by the cavers Fourastier and André Belin. Later expeditions found that the cave was actually composed of two separate segments. The first segment is twisted and relatively narrow, eventually opening up into a larger cavern. The entrance to the second segment is a sinkhole descending approximately into a sequence of pit chambers. Within this sequence is a gallery known locally as ', or "the hall of the hungry". This segment eventually opens into a flooded vault chamber. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German in the late 19th century, which entered German much earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Djurdjura
The Djurdjura or Jurjura Range ( ar, جبال جرجرة, ''Jabal Jurjura''; Berber ''Adrar n Jerjer'') is a mountain range of the Tell Atlas, part of the Atlas Mountain System. It is located in Kabylie, Algeria. Geography The Djurdjura is a massif made up of two differentiated ranges, one in the north with the Haïzer and Akouker subranges and the other in the south. Its highest point, Lalla Khedidja known in Kabylian as ''Tamgut Aâlayen'', has an elevation of and it is located in the southern range. Other notable summits are the 2,305 m high Ich n'Timedouine (أكارو تيمدواي), a peak located in the central area of the massif, highest point of the Akouker subrange. Adrar n'Hayzer (أدرار نن هيدزر), the highest point of the Haïzer subrange, is a 2,164 m tall summit rising above Bouira and the high valley of Oued Dhous. The Thaletat is a 1,638 m high rocky mountain with a very original shape located in Tizi Ouzou Province. Other notable features of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algeria
) , image_map = Algeria (centered orthographic projection).svg , map_caption = , image_map2 = , capital = Algiers , coordinates = , largest_city = capital , religion = , official_languages = , languages_type = Other languages , languages = Algerian Arabic (Darja) French , ethnic_groups = , demonym = Algerian , government_type = Unitary semi-presidential republic , leader_title1 = President , leader_name1 = Abdelmadjid Tebboune , leader_title2 = Prime Minister , leader_name2 = Aymen Benabderrahmane , leader_title3 = Council President , leader_name3 = Salah Goudjil , leader_title4 = Assembly President , leader_name4 = Ibrahim Boughali , legislature = Parliament , upper_house = Council of the Nation , lower_house ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wet Season
The wet season (sometimes called the Rainy season) is the time of year when most of a region's average annual rainfall occurs. It is the time of year where the majority of a country's or region's annual precipitation occurs. Generally, the season lasts at least a month. The term ''green season'' is also sometimes used as a euphemism by tourist authorities. Areas with wet seasons are dispersed across portions of the tropics and subtropics. Under the Köppen climate classification, for tropical climates, a wet season month is defined as a month where average precipitation is or more. In contrast to areas with savanna climates and monsoon regimes, Mediterranean climates have wet winters and dry summers. Dry and rainy months are characteristic of tropical seasonal forests: in contrast to tropical rainforests, which do not have dry or wet seasons, since their rainfall is equally distributed throughout the year.Elisabeth M. Benders-Hyde (2003)World Climates.Blue Planet Biomes. Retr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Belin
André Belin (1896-1983) was a French spelunker, active in North Africa. Spelunking activities With the help of some friends, André formed a group related to the Speleological Society of France. In Algeria, André explored the Anou Boussouil Anou Boussouil (in English "Great Chasm") is a limestone karst cave located in the mountains of Djurdjura, Algeria. The cave is long and deep. The entrance to the cave is up the mountainside. During the springtime rainy season, melting snow pour ..., which would later become the second largest pit in the world in 1950. References Further reading * Delanghe Damien, Medals and Awards (PDF document), in: Cahiers du CDS No. 12, May 2001. * Association of former officials of the French Federation of Speleology : In Memoriam. * Boulanger, P. (1966), page 104 * Chabert, J. and Choppy, J. ''(1983),'' André ''Belin,'' in 'Spelunca' (Paris) 1983 (12) 1896 births 1983 deaths {{France-sport-bio-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anou Ifflis
The Anou Ifflis cave (french: Anou Ifflis, Anu Ifflis) is a cave located in Tizi Ouzou in the mountains of the Kabylie. It is one of the deepest caves in Africa at . Notes and references [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Caves
This is a list of caves of the world that have articles or that are properly cited. They are sorted by continent and then country. Caves which are in overseas territories on a different continent than the home country are sorted by the territory's continent and name. Africa File:Cango Caves, Western Cape (6253225986).jpg, The Cango caves in western cape. File:African cave paintings.jpg, African cave paintings. File:Lithic Industries at Blombos Cave, Southern Cape, South Africa (c. 105 – 90 Ka).jpg, Lithic Industries at Blombos Cave, Southern Cape, South Africa. File:Wonder Caves Praying Mary.JPG, Wonder Caves Praying Mary. Algeria * Aïn Taïba * Anou Achra Lemoun * Anou Boussouil * Anou Ifflis * Anou Timedouine * Gueldaman caves * Ghar Boumâaza * Grotte de Cervantes * Kef Al Kaous * Rivière De La Tafna Botswana * Gcwihaba * Rhino Cave Cameroon * Gouffre de Mbilibekon * Grottes de Linté * Grotte de Loung * Grotte de Mfouda * Grotte Fovu [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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