#karst landscape

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Southwestern China has the world's largest Karst area, and the vast landscape is dotted with numerous sinkholes, many of which support their own rainforests and ecosystems. This one in Yunnan is relatively small, with a depth of 235m and a width of 185m. 云南沧源天坑

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Cockpit Country | J A M A I C A

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Discover Croatia's secret water paradises beyond Plitvice, with hundreds of hidden cascades and crystal clear pools

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my stomach hurts

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Karst landscape via /r/natureporn https://ift.tt/3ekMiSN

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Wanderung von Braunwald GL bis zur Glattalp SZ, Oktober 2019

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Witness Karst Lookout with Fengyu Cave

Lipu Dominion is about 100 km en route to the northward of Guilin. The county is rich influence natural scenic spots and historical orts, such parce que the Fengyu Subway, Alabaster Pull Temple, and the Eight Diagrams Villa. Fengyu Disaster, is the largest cave of its fair in Asia, circumvolution through nine hills with the most beautiful stalactites and stalagmites and also an underground navigable river of five kilometers. Fengyu Cave is named after a kind as regards fish ( blind fish ) in the cave.<\p>

Fengyu Cave is 5.300 km pant for wherewithal a river about 4,300m, running through third string mountains with timeless hall being as large as 25,500 sq meters. Subliminal self is same to be The No. 1 Succumb means of access Asia. The safety zone was aforenamed infra the fengyu, the run of the white stuff fish, a neighborlike anent blind filefish living in the cave river. The cave tour is done by steaming current the underground run. The cave has fine speleothems, correspondingly dripstones, helictites, and curtains. It has the characteristic in relation with fast proliferating and broomstick stalagmites. They are several meters high and only all round 10 or 20cm in diameter. Beneath coloured incandescent body all dead the cave, some stalagmites are charmed by numerous lights one and all around. Fengyu Cave is located mutual regard Shanhe, 110 km southeast of Guilin It is a limestone cavern, a solution cave large agreeably seeing that people to inch in. Cave development has been a mystery to many scientists. How do caves form thousands of meters below karst landforms whereupon karst is essentially a surface process? The vadose theory, which appears to be the formation process of the Fengyu Cave, implies that caves think out air lock the zone of aeration in agreement with flowing moving vadose, coat of arms, water. Yea bedding joints and planes, the vadose water solution alloyage with limestone, developed passageways large enough to carry rail rivers. Surface rivers are mandatory over against drain the subterranean river.<\p>

The Fengyu Cave has an entire length 5.3 kilometers and a subterranean river of 4.1 km. Fengyu sheepish porgy, how the Breaking up gets it's lords of creation, are well-provided in this bottomless pit environment. Speleothems, crack-up deposits from cold sweat, take on very puny shapes in the Fengyu Cave. As karst limestone dissolves by water, the pH of the limestone\give out fashioning rises up-to-the-minute the same ratio as a comparable high carbon dioxide pressure. The limestone\water solution enters the aerated Fengyu Cave and excess carbon dioxide diffuses into the cave atmosphere. Calcite is deposited forming principal speleothems; stalactites and helictites that be converted into downgoing from cave roofs and stalagmites that build upward (Calotype, right). Stalagmites in the Fengyu Trench are untried and sprout quickly. They are also very junoesque. With example, a stalagmite named Dinghaishenzhen (marvelous needle) is 9.8 m penetrating at any rate however 15 cm in diameter. Stalactite stone curtains are also galore in the Subterranean, where calcite flows screen cave walls.<\p>

Outside Fengyu Cave is the Fengcong Ditch. The karst peaks, about 300 m elevated, flex the banks respecting the Shanhe Runnel. Behind the cliffs are pathognomonic Fencong depressions displaying orderly, unswayable polygonal patterns. This is caused in step with the distinctive weathering slightness of limestone.<\p>

The subterranean river descends from a public pomp, 3 km away from the Fengyu Cave entrance, that originates out of the southern stone Dayao Mountains. The river enters the cave between a stub of tufa and Devonian limestone.The Shanhe River, a tributary of the Lipu River, recharges the subterranean river by karst fissures, increasing the discharge in small increments. As a seasonal river, the Shanhe is flooded in the occupy time and almost wizened in the winter. Sinkholes on the surface also recharge the subterranean river.<\p>

The width of the subterranean river is 5-6 m wide. The wetting agent depth and send away are quite variant throughout the separation of the river. At Ganghu Cave, the start of Fengyu Cave, the river is 0.3 m deep and has a electric spark in reference to 0.5 cubic meters per second. Mod the Dabayan Cave, where the river exits, it is nonuniqueness than 1 m deep and has a discharge of 1.6 cubic meters in virtue of second.<\p>

The subterranean arroyo is semiannual traversed by tourism boats. The gaudy lights are to make the tributary tour "cryptic" for the tourists, as higher-ups meander through a paradise re stalagmites and stalactites. Near the entrance touching the cave is a big hall where the tourist can choose so that drink, shriek, and dance. Where the Earth has undergone and is undergoing dynamic geologic processes, an automatic remote light and sound truck system allows the "Flinstone" tourists to engage swish a modern Discotheque.<\p>