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7,900 square kilometres (3,100 sq mi), or 19% of the surface of Switzerland, is karst, within this area lies the majority of the 7,500 currently known Swiss caves, with an accumulated passage length of more than 1,200 kilometres (750 mi).
Salt karst (or 'halite karst') is developed in areas where salt is undergoing solution underground. It can lead to surface depressions and collapses which present a geo-hazard. [29] Karst areas tend to have unique types of forests. The karst terrain is difficult for humans to traverse, so that their ecosystems are often relatively undisturbed.
The valley is notable for its karst formations, which have been designated a National Natural Landmark. Grassy Cove is also home to a small unincorporated community. Grassy Cove is located atop the Cumberland Plateau, approximately 5 miles (8.0 km) east of Crossville and 5 miles (8.0 km) west of the plateau's Walden Ridge escarpment.
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Most of the Karst is located in the Slovenian Littoral, covering an area of 429 square kilometres, with a population of about 19,000 people. The Karst as a whole has exactly 100 settlements. The town of Sežana is the center of the region on the Slovene side of the border. The main rural centers are the settlements of Divača, Dutovlje, and Komen.
Underground lake within Cross Cave in Slovenia, one of 22 such lakes. An underground lake (also known as a subterranean lake) is a lake underneath the surface of the Earth. . Most naturally occurring underground lakes are found in areas of karst topography, [1] [2] where limestone or other soluble rock has been weathered away, leaving a cave where water can flow and accumu
The Great Blue Hole, a giant submarine sinkhole, near Ambergris Caye, Belize. The following is a list of sinkholes, blue holes, dolines, crown holes, cenotes, and pit caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.
The area was made a National Natural Landmark, the Germany Valley Karst Area, in 1973 by the National Park Service. [1] The NPS cited it as "one of the largest cove or intermountain karst areas in the country, unique because all the ground water recharge and solution activities are linked with precipitation within the cove."