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Cave Waterfall
A subterranean waterfall or underground waterfall is a waterfall located underground, usually in a cave or mine.Vrtoglavica Cave in , and is at least . A renowned example in the is , high, in |
Ruby Falls
Ruby Falls is a series of underground cascading waterfalls totaling in Lookout Mountain, near Chattanooga, Tennessee, in the United States. Geology About 200 to 240 million years ago (in the Carboniferous Period, at the end of the Paleozoic Era), the eastern Tennessee area was covered with a shallow sea, the sediments of which eventually formed limestone rock.Ruby Falls Geology, Ruby Falls Rocks accessed 11 June 2006 About 200 million years ago, this area was Tectonic uplift, uplifted, forming Lookout Mountain and nearby ridges. Slightly acidic groundwater running through cracks in the limestone slowly dissolved the relatively soluble rock, causing narrow cracks to widen into passages. This process, called chemical weathering, caused various caves to form inside Lookout Mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterfall
A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in several ways, but the most common method of formation is that a river courses over a top layer of resistant bedrock before falling on to softer rock, which Erosion, erodes faster, leading to an increasingly high fall. Waterfalls have been studied for their impact on species living in and around them. Humans have had a distinct relationship with waterfalls for years, travelling to see them, exploring and naming them. They can present formidable barriers to navigation along rivers. Waterfalls are religious sites in many cultures. Since the 18th century they have received increased attention as tourist destinations, sources of hydropower, andparticularly since the mid-20th centuryas subjects of research. Definition and terminology A waterfall is gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subterranean Waterfalls
Subterranean(s) or The Subterranean(s) may refer to: * Subterranea (geography), underground structures, both natural and man-made Literature * Subterranean (novel), ''Subterranean'' (novel), a 1998 novel by James Rollins * ''Subterranean Magazine'', an American fantasy, horror and science fiction magazine * Subterranean Press, an American small press publisher * ''The Subterraneans'', a 1958 novella by Jack Kerouac Media (film and TV) * The Subterraneans (film), ''The Subterraneans'' (film) 1960 motion picture based on the Kerouac novella * ''The Subterranean'', a 1967 Romanian film * ''Subterranean'' (TV program), an American music show which ran from 2003 to 2011 Music * Subterranean (EP), ''Subterranean'' (EP) (1995), an EP by In Flames * "Subterranean" (2003), a song by Smack (American band), Smack * "Subterranean" (2014), a song by Foo Fighters on the album Sonic Highways * Subterranean Records, an American record label * "Subterraneans" (1977), a song by David Bowie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subterranea (geography)
Subterranea are ''underground structures'', both natural (such as caves) and human-made (such as Mining, mines). Some subterranea and related topics include: Natural * Caves ** Cenote ** Ice cave ** Sea cave ** Sinkhole * Karst * Lava tube ** Lunar lava tube, Lunar and Martian lava tubes * Subterranean river * Subterranean waterfall * Underground lake * Volcanic pipe Human-made or related * Borehole * Bunker * Burial vault (tomb) * Casemate * Catacombs * Cave dweller, Underground living * Cave temple * Basement, Cellar * Dungeon * Dugout (shelter) * Fogou * Mining, Mine * Rock cut architecture, rock-cut tomb * Smuggling tunnel * Tunnels (street tunnel, train tunnels) * Underground city, umbrella article for underground dwellings and facilities * Underground rapid transit system * Wine cave See also * Boring (earth) * Seattle Underground * Subterranean London Subterranea (geography), {{geo-term-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subglacial Lake
A subglacial lake is a lake that is found under a glacier, typically beneath an ice cap or ice sheet. Subglacial lakes form at the boundary between ice and the underlying bedrock, where gravitational pressure decreases the pressure melting point of ice. Over time, the overlying ice gradually melts at a rate of a few millimeters per year. Meltwater flows from regions of high to low hydraulic pressure under the ice and pools, creating a body of liquid water that can be isolated from the external environment for millions of years. Since the first discoveries of subglacial lakes under the Antarctic Ice Sheet, more than 400 subglacial lakes have been discovered in Antarctica, beneath the Greenland Ice Sheet, and under Iceland's Vatnajökull ice cap. Subglacial lakes contain a substantial proportion of Earth's liquid freshwater, with the volume of Antarctic subglacial lakes alone estimated to be about 10,000 km3, or about 15% of all liquid freshwater on Earth. As ecosystems is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underground Lake
An underground lake or subterranean lake is a lake underneath the surface of the Earth. Most naturally occurring underground lakes are found in areas of Karst topography, where limestone or other soluble rock has been weathered away, leaving a cave where water can flow and accumulate. Natural underground lakes are an uncommon hydrogeological feature. More often, groundwater gathers in formations such as aquifers or springs. The largest subterranean lake in the world is in Dragon's Breath Cave in Namibia, with an area of almost ; the second largest is The Lost Sea, located inside Craighead Caverns in Tennessee, United States, with an area of Characteristics In general terms, an underground lake is any body of water that is similar in size to a surface lake and exists mostly or entirely underground; though, a precise scientific definition of what may be considered a lake is not yet well-established. Underground lakes could be classified as either “lakes” or "ponds", de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subterranean River
A subterranean river is a river that runs wholly or partly beneath the ground surface – one where the riverbed does not represent the surface of the Earth. It is distinct from an aquifer, which may flow like a river but is contained within a permeable layer of rock or other unconsolidated materials. A river flowing below ground level in an open gorge is not classed as subterranean. Subterranean rivers may be entirely natural, flowing through cave systems. In karst topography, rivers may disappear through sinkholes, continuing underground. In some cases, they may emerge into daylight further downstream. The longest subterranean river in the world is the Sistema Sac Actun cave system in Mexico. Subterranean rivers can also be the result of covering over a river or diverting its flow into culverts, usually as part of urban development.Richard J. Heggen: Underground Rivers from the River Styx to the Rio San Buenaventura with Occasional Diversions'', University of New Mexico. Rever ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cavern
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] |
Tennessee
Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to the north, Virginia to the northeast, North Carolina to the east, Georgia, Alabama, and Mississippi to the south, Arkansas to the southwest, and Missouri to the northwest. Tennessee is geographically, culturally, and legally divided into three Grand Divisions of East, Middle, and West Tennessee. Nashville is the state's capital and largest city, and anchors its largest metropolitan area. Other major cities include Memphis, Knoxville, Chattanooga, and Clarksville. Tennessee's population as of the 2020 United States census is approximately 6.9 million. Tennessee is rooted in the Watauga Association, a 1772 frontier pact generally regarded as the first constitutional government west of the Appalachian Mountains. Its name derives from "Tanas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterfall
A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in several ways, but the most common method of formation is that a river courses over a top layer of resistant bedrock before falling on to softer rock, which Erosion, erodes faster, leading to an increasingly high fall. Waterfalls have been studied for their impact on species living in and around them. Humans have had a distinct relationship with waterfalls for years, travelling to see them, exploring and naming them. They can present formidable barriers to navigation along rivers. Waterfalls are religious sites in many cultures. Since the 18th century they have received increased attention as tourist destinations, sources of hydropower, andparticularly since the mid-20th centuryas subjects of research. Definition and terminology A waterfall is gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Show Cave
A show cave—also called tourist cave, public cave, and, in the United States, commercial cave—is a cave which has been made accessible to the public for guided visits. Definition A show cave is a cave that has been made accessible to the public for guided visits, where a cave is defined as a natural occurring void beneath the surface of the earth, per the International Show Caves Association. A show cave may be managed by a government or commercial organization and made accessible to the general public, usually for an entrance fee. Unlike wild caves, they may possess regular opening hours, guided group tours, constructed trails and stairs, color artificial illumination and other lighting, musical/video/laser shows and concerts, elevators, small trains, and boats if they contain underground water features. Some caves (mainly in Asia) open to the public have temples, monasteries and religious statues or monuments. Some caves are visited by millions of tourists annually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lookout Mountain Caverns
Lookout Mountain Caverns (Lookout Mountain Cave, or Lower Cave) is the second longest known cave in Hamilton County, Tennessee. Its ''mapped'' length of 2.481 miles (3.993 kilometers) places it at 361st on the ''United States Long Caves List''. Unofficially, anecdotal reports of cave expeditions have exceed 12 miles with legends exceeding 82 miles. The cave is closed and public access is forbidden. Entrance The Lookout Mountain Cave entrance was at the base of Lookout Mountain along the Tennessee River at Moccasin Bend. The original opening was natural unlike manmade access to Ruby Falls. The opening is visible from "right-of-way boundaries" of the Railway and Interstate 24, although it is widely considered to be sealed inside the tunnel. Despite the closure, the cave is bisected by a tunnel on a second railroad just south of the main entrance forcing one to emerge on the railway inside the tunnel and then accessing the rest of the cave from there. Officially the cave is closed, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
