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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 dissolve 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 longest caves by country * List of longest Dinaric caves * List of deepest caves * Show cave * Speleology External links World's Deepest CavesWorld's Longest Caves References {{DEFAULTSORT:Longest Caves Longest Caves Cave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammoth Cave Tour
A mammoth is any species of the extinct elephantid genus ''Mammuthus.'' They lived from the late Miocene epoch (from around 6.2 million years ago) into the Holocene until about 4,000 years ago, with mammoth species at various times inhabiting Africa, Asia, Europe, and North America. Mammoths are distinguished from living elephants by their (typically large) spirally twisted tusks and in some later species, the development of numerous adaptions to living in cold environments, including a thick layer of fur. Mammoths and Asian elephants are more closely related to each other than they are to African elephants. The oldest mammoth representative, '' Mammuthus subplanifrons'', appeared around 6 million years ago during the late Miocene in what is now southern and Eastern Africa.'''' Later in the Pliocene, by about three million years ago, mammoths dispersed into Eurasia, eventually covering most of Eurasia before migrating into North America around 1.5–1.3 million years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundary, maritime boundaries with the Pacific Ocean to the west, the Caribbean Sea to the southeast, and the Gulf of Mexico to the east. Mexico covers 1,972,550 km2 (761,610 sq mi), and is the List of countries by area, thirteenth-largest country in the world by land area. With a population exceeding 130 million, Mexico is the List of countries by population, tenth-most populous country in the world and is home to the Hispanophone#Countries, largest number of native Spanish speakers. Mexico City is the capital and List of cities in Mexico, largest city, which ranks among the List of cities by population, most populous metropolitan areas in the world. Human presence in Mexico dates back to at least 8,000 BC. Mesoamerica, considered a cradle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Cave National Park
Wind Cave National Park is a national park of the United States located north of the town of Hot Springs in western South Dakota. Established on January 3, 1903 by President Theodore Roosevelt, it was the sixth national park in the U.S. and the first cave to be designated a national park anywhere in the world. The cave is notable for its calcite formations known as boxwork, as well as its frostwork. Approximately 95 percent of the world's discovered boxwork formations are found in Wind Cave. Wind Cave is one of the best known examples of a breathing cave. The cave is recognized as the densest cave system in the world, with the greatest passage volume per cubic mile. Wind Cave is the sixth longest cave in the world with of explored cave passageways () and the third longest cave in the United States, though it is only the second longest cave in Custer County, South Dakota behind Jewel Cave. Despite the close proximity, no connection has ever been found between Wind Cave an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Springs, South Dakota
Hot Springs (Lakota: ''mni kȟáta''; "hot water") is a city in and the county seat of Fall River County, South Dakota, United States. As of the 2020 census, the city population was 3,395. In addition, neighboring Oglala Lakota County contracts the duties of Auditor, Treasurer and Register of Deeds to the Fall River County authority in Hot Springs. Geography Hot Springs is located in Fall River County at the southern edge of South Dakota's Black Hills. The Fall River runs through the city. According to the United States Census Bureau, the city has a total area of , all land. History The Sioux and Cheyenne people had long frequented the area, appreciating its warm springs. According to several accounts, including a ledger art piece by the Oglala Lakota artist Amos Bad Heart Bull, Native Americans considered the springs sacred. European settlers arrived in the second half of the 19th century. They first named the city "Minnekahta" after its Lakota name. It was renamed Hot Spr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wind Cave
Wind Cave National Park is a national park of the United States located north of the town of Hot Springs in western South Dakota. Established on January 3, 1903 by President Theodore Roosevelt, it was the sixth national park in the U.S. and the first cave to be designated a national park anywhere in the world. The cave is notable for its calcite formations known as boxwork, as well as its frostwork. Approximately 95 percent of the world's discovered boxwork formations are found in Wind Cave. Wind Cave is one of the best known examples of a breathing cave. The cave is recognized as the densest cave system in the world, with the greatest passage volume per cubic mile. Wind Cave is the sixth longest cave in the world with of explored cave passageways () and the third longest cave in the United States, though it is only the second longest cave in Custer County, South Dakota behind Jewel Cave. Despite the close proximity, no connection has ever been found between Wind Cave an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jewel Cave National Monument
Jewel Cave National Monument contains Jewel Cave, currently the fifth longest cave in the world and second longest cave in the United States, with of mapped passageways as of May 2024. It is located approximately west of the town of Custer in Black Hills of South Dakota South Dakota (; Sioux language, Sioux: , ) is a U.S. state, state in the West North Central states, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Dakota people, Dakota Sioux .... It became a U.S. National Monument, national monument in 1908. History Frank and Albert Michaud, two local prospectors, discovered the cave in 1900, when they felt cold air blowing out of a small hole in a canyon. It is unknown whether any previous inhabitants of the area were aware of the natural cave opening, which was not large enough for a person to enter.Jewel Cave brochure; National Park Service; GPO, WDC After enlarging the cave entrance with dynamite, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Custer, South Dakota
Custer is a city in Custer County, South Dakota, United States. The population was 1,919 at the 2020 census. It is the county seat of Custer County. History Custer is the oldest town established by European Americans in the Black Hills. Gold was discovered east of Custer during the Black Hills Expedition, conducted by the 7th Cavalry led by Lt. Colonel George Armstrong Custer, a discovery which initiated the Black Hills Gold Rush. For thousands of years, the Black Hills had been part of the territory of varying tribes of indigenous peoples. They were within historical territory of the Oglala Sioux at the time of United States encounter, and within the Great Sioux Reservation established by the US Treaty of Fort Laramie (1868). Having established dominance in the area by the eighteenth century, the Oglala Sioux had long considered the Black Hills as sacred land. After increasing encroachment by Americans and violent confrontations, the U.S. government forced the Sioux t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Park Service
The National Park Service (NPS) is an List of federal agencies in the United States, agency of the Federal government of the United States, United States federal government, within the US Department of the Interior. The service manages all List of national parks of the United States, national parks; most National monument (United States), national monuments; and other natural, historical, and recreational properties, with various title designations. The United States Congress created the agency on August 25, 1916, through the National Park Service Organic Act. Its headquarters is in Washington, D.C., within the main headquarters of the Department of the Interior. The NPS employs about 20,000 people in units covering over in List of states and territories of the United States, all 50 states, the District of Columbia, and Territories of the United States, US territories. In 2019, the service had more than 279,000 volunteers. The agency is charged with preserving the ecological a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jewel Cave
Jewel Cave National Monument contains Jewel Cave, currently the fifth longest cave in the world and second longest cave in the United States, with of mapped passageways as of May 2024. It is located approximately west of the town of Custer in Black Hills of South Dakota. It became a national monument in 1908. History Frank and Albert Michaud, two local prospectors, discovered the cave in 1900, when they felt cold air blowing out of a small hole in a canyon. It is unknown whether any previous inhabitants of the area were aware of the natural cave opening, which was not large enough for a person to enter.Jewel Cave brochure; National Park Service; GPO, WDC After enlarging the cave entrance with dynamite, the Michaud brothers found a cavern lined with calcite crystals, which led them to name it "Jewel Cave". The brothers tried to capitalize on the discovery, widening the opening, building walkways inside, and opening it to tourists. Although their venture was unsuccessful, news ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sistema Dos Ojos
Dos Ojos (officially ) is part of a flooded cave system located north of Tulum, on the Caribbean coast of the Yucatán Peninsula, in the state of Quintana Roo, Mexico. The exploration of Dos Ojos began in 1987 and still continues. The surveyed extent of the cave system is and there are 28 known sinkhole entrances, which are locally called cenotes. In January 2018, a connection was found between Sistema Dos Ojos and Sistema Sac Actun. The smaller Dos Ojos became a part of Sac Actun, making the Sistema Sac Actun the longest known underwater cave system in the world. Dos Ojos lies north of the rest of the Sac Actun cave system. As a separate system, Dos Ojos remained in the top ten, if not the top three, longest underwater cave systems in the world since the late 1980s. Dos Ojos contains the deepest known cave passage in Quintana Roo with of depth located at "The Pit" discovered in 1996 by Cave diving, cave explorers who came all the way from the main entrance some away. The deep p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sistema Sac Actun
Sistema Sac Actun (, ) is an underwater cave system situated along the Caribbean coast of the Yucatán Peninsula with passages to the north and west of the city of Tulum. Discovery of a connection to Sistema Dos Ojos in 2018 made it the longest known underwater cave system. , it is the second longest underwater cave system in the world, only surpassed by Sistema Ox Bel Ha. The remains of a mastodon and a human female that might be the oldest evidence of human habitation in the Americas have been found in the cave. History of exploration Exploration started from ''Gran Cenote'' west of Tulum. The whole of the explored cave system lies within the Municipality of Tulum, in the state of Quintana Roo. In early 2007, the underwater cave Sistema Nohoch Nah Chich was connected into and subsumed into Sac Actun making it the longest surveyed underwater cave system in the world. Sac Actun measured (after connecting with ''Sistema Aktun Hu'' ((in January 2011) and is, with an ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land across an area of nearly , making it the list of countries and dependencies by area, third-largest country by land area. The country is divided into 33 Province-level divisions of China, province-level divisions: 22 provinces of China, provinces, 5 autonomous regions of China, autonomous regions, 4 direct-administered municipalities of China, municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is List of cities in China by population, its most populous city by urban area and largest financial center. Considered one of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
