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  2. List of longest caves - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_caves

    Caves are found around the world. The largest form in areas of karst landforms whose rocks dissolve easily. Preferable conditions for karst cave formation are adequate precipitation, enough plants and animals to produce ample carbon dioxide, and a landscape of gentle hills which drains slowly.

  3. Hang Sơn Đoòng - Wikipedia

    en.wikipedia.org/wiki/Hang_Sơn_Đoòng

    Formed in Carboniferous/Permian limestone, the main Sơn Đoòng cave passage is the largest known cave passage in the world by volume – 3.84 × 10 7 m 3 (1.36 × 10 9 cu ft), according to BCRA expedition leader Howard Limbert. It is more than 5 kilometres (3.1 mi) long, 200 metres (660 ft) high and 150 metres (490 ft) wide.

  4. Mammoth Cave National Park - Wikipedia

    en.wikipedia.org/wiki/Mammoth_Cave_National_Park

    Tourists inside the cave. The park's mission is stated in its foundation document: [7] The purpose of Mammoth Cave National Park is to preserve, protect, interpret, and study the internationally recognized biological and geologic features and processes associated with the longest known cave system in the world, the park’s diverse forested karst landscape, the Green and Nolin rivers, and ...

  5. List of longest caves in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_caves_in...

    Mammoth Cave, the longest known cave system in the world The following is a list of the longest caves in the United States per length (over 50 kilometres or 30 miles) of documented passageways. Many passageways are still being discovered; this list is based on the latest verifiable data. [ 1 ]

  6. List of longest caves by country - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_caves_by...

    This list of longest caves by country includes the longest-known natural cave per country. To be listed, the caves must have been surveyed to cave surveying standards , and the results published in reliable sources.

  7. How long is Mammoth Cave? 6 more miles discovered in ... - AOL

    www.aol.com/news/long-mammoth-cave-6-more...

    The world's longest cave system just got a little bit longer, as Kentucky's Mammoth Cave National Park announced 6 more miles have been discovered.

  8. World's largest cave is so big you can fly a Boeing 747 ... - AOL

    www.aol.com/news/2016-12-14-worlds-largest-cave...

    The world's largest cave is so big that a Boeing 747 could fly through its largest cavern unscathed. It could fit a Manhattan city block complete with 40-story skyscrapers and has its own weather ...

  9. Krubera Cave - Wikipedia

    en.wikipedia.org/wiki/Krubera_Cave

    The cave was pushed to −340 m during 1982–1987. Two "windows" in a vertical shaft at depths of 220–250 m were documented on the cave map but remained unexplored. During this time the cave received its second, alternative name Voronja (Crows') Cave, owing to the number of crows nesting in the entrance shaft.