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Zhijin Cave, Guizhou (UNESCO World Heritage Site) Jiuzhaigou Valley and Huanglong Scenic and Historic Interest Area , ( UNESCO World Heritage Site ) Shaanxi tiankeng cluster , discovered in 2016, it is one of the largest in the world comprising forty-nine sinkholes and more than fifty funnels ranging from 50–100 metres in diameter.
Cacahuamilpa is one of the largest cave systems in the world. [4] It is a "live" cave system, meaning that groundwater still filters down into it, and that the formations there are still growing. [3] Inside the cavern system are ninety large "salons" separated by large natural rock walls and connected to one another via a central gallery. [4]
Including connected dry caves makes Sistema Sac Actun 386.122 km (239.925 mi) long, the second longest cave in Mexico [2] and third longest worldwide. [ 6 ] On December 9, 2004, after a dive with two other teammates, Kent Hirsch and Michael Nast were drowned deep in the cave as they got lost and exhausted their oxygen supply.
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Swartkrans or Swartkranz is a fossil-bearing cave designated as a South African National Heritage Site, located about 32 km (20 mi) from Johannesburg. [1] It is located in the Cradle of Humankind World Heritage Site and is notable for being extremely rich in archaeological material, particularly hominin remains. [2]
Manjanggul (Korean: 만장굴) is a lava tube located in Gimnyeong-ri, Gujwaeup, Jeju City, South Korea.At up to 23 metres (75') wide, 30 metres (100') high and 8.928 km (5½ miles) long, it is the 12th-longest lava tube in the world and the second longest on Jeju Island, [1] although a significant portion of the cave is closed to visitors. [2]
[1] [2] In 2020, a scientific expedition to the cave revealed that part of the system apparently reaches 1,000 metres (3,300 ft) deep, albeit with the lowest reaches sediment-filled. Analysis of the water found carbon and helium isotopes which implied that the cave has been formed by acidic waters, heated by the mantle, welling up from below.
Sistema Huautla is a cave system in the Sierra Mazateca mountains of the southern Mexican state of Oaxaca.As of May 2024 it is the deepest cave system in the Western Hemisphere, 1,560 metres (5,120 ft) from the highest entrance to the lowest reached point in the cave system, with over 62 miles of mapped passageways.