Son Doong Cave, was made public in 2009 by a group of British scientists from the British Cave Research Association after they extensively surveyed the area. Photo:Carsten Peter / National Geographic Creative Located approximately 500km south of Hanoi, Son Dong cave is more than 200m wide, 150m high and about 9km long. It houses a jungle and a river and could fit a 40-storey skyscraper within its walls. Photo:meteoweb.eu “The Door to Hell” in Derweze, Turkmenistan Photo:Neil Melville-Kenney / Via Flickr: fijian_scion “The Troll’s Tongue” in Hordaland, Norway Photo:J Wildman / Getty Images “The Stairway to Heaven” in Oahu, Hawaii Photo:Shawn Clover / Via Flickr: shawnclover “The Devil’s Pool,” bordering Zimbabwe and Zambia in Africa Photo:Jason Yu / Getty Images The Cliffs of Moher, Ireland Photo:Victor Lucas Mendenhall Ice Caves in Juneau, Alaska Photo:John Hyde / Corbis The Kjeragbolten boulder in Rogaland, Norway Photo:Simon Taylor / Via Flickr: simontaylor The “Swing at the End of the World” in Baños, Ecuador Photo:Chris Morris / Via Caters News Agency Neptune Islands, Australia Photo:Michael Melford, National Geographic The blood-red Lake Tuz in Aksaray, Turkey Photo:Anadolu Agency / Getty Images “Death Road” in the Yungas region of Bolivia Photo:Nick Smith / Guzelilian Mount Hua Shan in in Huayin, China Photo:Flocu / Getty Images Ellison’s Cave in Georgia, United States Photo:Michael Nichols / National Geographic |
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