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Hölloch Cave
The Hölloch ( en, Hellhole) is a long cave in the municipality Muotathal in Switzerland. In addition to being the second longest cave in Europe, it is also notable for having a depth of . The Hölloch is an example of a karst cave system. Exploration The cave was first scientifically explored in 1875 by a group led by Alois Ulrich. Later expeditions in the 1950s by Alfred Bögli, one of the pioneers of speleology, managed to explore a large part of the cave. The explored length of the cave increased from in 1952 to by 1968. It was the first cave in the world where the explored length reached 100 km, and until the linkage of the Flint Ridge Cave System to the Mammoth Cave System in 1972, it was believed to be the largest cave system in the world. Despite this, exploration of the Hölloch continued, and in 1976 it had been mapped to approximately long. Tourism A portion of the cave near the entrance is open to visitors, but the remainder is restricted to qual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canton Of Schwyz
The canton of Schwyz (german: Kanton Schwyz rm, Chantun Sviz; french: Canton de Schwytz; it, Canton Svitto) is a canton in central Switzerland between the Alps in the south, Lake Lucerne to the west and Lake Zürich in the north, centred on and named after the town of Schwyz. It is one of the founding cantons of Switzerland; Switzerland's name is derived from the name of the canton, and the flag of Switzerland from its coat of arms. For the history of the name, see Schwyz. The Swiss Federal Charter is on display in Schwyz. Northeast of the town of Schwyz is Einsiedeln Abbey. History Prehistory to the Roman era The earliest traces of humans in Schwyz are from the Upper Paleolithic and Early Mesolithic, or about 12,500 BC. An excavation of the karst caves in the valley of the Muota river (''Muotatal'') revealed numerous sites, some dating to the Younger Dryas period (c. 10,000 BC). The alpine meadows at Bödmeren, Twärenen and Silberen were Stone Age hunter-gather ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switzerland
). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel, St. Gallen a.o.). , coordinates = , largest_city = Zürich , official_languages = , englishmotto = "One for all, all for one" , religion_year = 2020 , religion_ref = , religion = , demonym = , german: Schweizer/Schweizerin, french: Suisse/Suissesse, it, svizzero/svizzera or , rm, Svizzer/Svizra , government_type = Federal assembly-independent directorial republic with elements of a direct democracy , leader_title1 = Federal Council , leader_name1 = , leader_title2 = , leader_name2 = Walter Thurnherr , legislature = Federal Assembly , upper_house = Council of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Speleological Society
The National Speleological Society (NSS) is an organization formed in 1941 to advance the exploration, conservation, study, and understanding of caves in the United States. Originally headquartered in Washington D.C., its current offices are in Huntsville, Alabama. The organization engages in the research and scientific study, restoration, exploration, and protection of caves. It has more than 10,000 members in more than 250 grottos. History The Speleological Society of the District of Columbia (SSDC) was formed on May 6, 1939 by Bill Stephenson. In the fall of 1940, the officers of the SSDC drafted a proposed constitution that would transform the SSDC into the National Speleological Society. On January 24, 1941, Stephenson sent a letter to all members of the SSDC announcing that "on January 1 the Society was reorganized as a national organization." The New England Grotto was the first NSS Grotto. It was chartered in 1941 with Clay Perry as president and Ned Anderson as vice p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muotathal
, neighboring_municipalities= Bürglen (UR), Glarus (GL), Glarus Süd (GL), Illgau, Innerthal, Morschach, Oberiberg, Riemenstalden, Spiringen (UR), Schwyz, Unteriberg, Unterschächen (UR) , twintowns= } Muotathal is a village and a municipality in Schwyz District in the canton of Schwyz in Switzerland. The eponymous valley, the Muotatal, is formed by the Muota, which joins Lake Lucerne at Brunnen. History Muotathal is first mentioned in 1246 as ''Muthathal'' and ''Mutetal''. Geography The village is located in the valley of the river Muota, the Muotatal, with which it shares the name. The municipality is located in a series of valleys on the eastern edge of the canton, on the borders with the cantons of Uri and Glarus. It is the 10th largest municipality area-wise in Switzerland. It consists of the hamlet Ried, village sections of Schachen, Wil, Hinterthal (had its own post office since 1896, though it has now grown together with Schachen), and the hamlet Bisisthal i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Longest Caves
This list of longest caves includes caves in which the combined length of documented passageways exceeds . In some of these caves, passageways are still being discovered. Geographical distribution Caves are found around the world. The largest form in areas of karst landforms whose rocks erode easily. Preferable conditions for karst cave formation are adequate precipitation, enough plants and animals to produce ample carbon dioxide, and a landscape of gentle hills which drains slowly. The highest concentrations of long caves in the world are found in the Pennyroyal Plateau of southern Kentucky, United States, in the Black Hills of South Dakota, United States, and in the Yucatán Peninsula, Mexico. List See also * List of caves * List of deepest caves * Show cave * Speleology External links World's Deepest Caves References {{DEFAULTSORT:Longest Caves Longest Caves Geography-related lists of superlatives Caves A cave or cavern is a natural void in the gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, Dolomite (rock), 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 language, German in the late 19th century, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alois Ulrich
Alois (Latinized ''Aloysius'') is an Old Occitan form of the name Louis. Modern variants include ''Aloïs'' ( French), ''Aloys'' (German), ''Alois'' (Czech), ''Alojz'' ( Slovak, Slovenian), '' Alojzy'' (Polish), '' Aloísio'' (Portuguese, Spanish, Italian), and '' Alajos'' ( Hungarian). People called Alois/Aloys * Alois Alzheimer (1864–1915), German psychiatrist and neuropathologist * Alois Arnegger (1879–1963), Austrian painter * Alois Biach (1849–1918), Austrian physician and medical writer * Alois Brunner (1912–2001), Austrian Nazi SS concentration camp war criminal * Alois Carigiet (1902–1985), Swiss illustrator * Alois Dryák (1872–1932), Czech architect * Alois Eliáš (1890–1942), Czech general and politician * Alois Estermann, senior officer of the Pontifical Swiss Guard who was murdered in his apartment * Alois Hába, Czech composer * Alois Hitler (1837–1903), born Aloys Schicklgruber; Adolf Hitler's father * Alois Hitler, Jr. (1882–1956), Adolf Hitler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Bögli
Alfred may refer to: Arts and entertainment *'' Alfred J. Kwak'', Dutch-German-Japanese anime television series * ''Alfred'' (Arne opera), a 1740 masque by Thomas Arne * ''Alfred'' (Dvořák), an 1870 opera by Antonín Dvořák *"Alfred (Interlude)" and "Alfred (Outro)", songs by Eminem from the 2020 album ''Music to Be Murdered By'' Business and organisations * Alfred, a radio station in Shaftesbury, England *Alfred Music, an American music publisher * Alfred University, New York, U.S. *The Alfred Hospital, a hospital in Melbourne, Australia People * Alfred (name) includes a list of people and fictional characters called Alfred * Alfred the Great (848/49 – 899), or Alfred I, a king of the West Saxons and of the Anglo-Saxons Places Antarctica * Mount Alfred (Antarctica) Australia * Alfredtown, New South Wales * County of Alfred, South Australia Canada * Alfred and Plantagenet, Ontario * Alfred Island, Nunavut * Mount Alfred, British Columbia United States * Alfred, Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speleology
Speleology is the scientific study of caves and other karst features, as well as their make-up, structure, physical properties, history, life forms, and the processes by which they form ( speleogenesis) and change over time (speleomorphology). The term ''speleology'' is also sometimes applied to the recreational activity of exploring caves, but this is more properly known as ''caving'', ''potholing'' (British English), or ''spelunking''. Speleology and caving are often connected, as the physical skills required for ''in situ'' study are the same. Speleology is a cross-disciplinary field that combines the knowledge of chemistry, biology, geology, physics, meteorology, and cartography to develop portraits of caves as complex, evolving systems. History Before modern speleology developed, John Beaumont wrote detailed descriptions of some Mendip caves in the 1680s. The term speleology was coined by Émile Rivière in 1890. Prior to the mid-nineteenth century the scientific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammoth Cave National Park
Mammoth Cave National Park is an American national park in west-central Kentucky, encompassing portions of Mammoth Cave, the longest cave system known in the world. Since the 1972 unification of Mammoth Cave with the even-longer system under Flint Ridge to the north, the official name of the system has been the Mammoth–Flint Ridge Cave System. The park was established as a national park on July 1, 1941, a World Heritage Site on October 27, 1981, an international Biosphere Reserve on September 26, 1990 and an International Dark Sky Park on October 28, 2021. The park's are located primarily in Edmonson County, with small areas extending eastward into Hart and Barren counties. The Green River runs through the park, with a tributary called the Nolin River feeding into the Green just inside the park. Mammoth Cave is the world's longest known cave system with more than of surveyed passageways, which is nearly twice as long as the second-longest cave system, Mexico' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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