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  2. Xiaozhai Tiankeng - Wikipedia

    en.wikipedia.org/wiki/Xiaozhai_Tiankeng

    The Xiaozhai Tiankeng is 626 meters (2,054 feet) long, 537 meters (1,762 feet) wide, and between 511 and 662 meters (1,677 and 2,172 ft) deep, with vertical walls. Its volume is 119,349,000 m³ and the area of its opening is 274,000 m 2. This material has been dissolved and carried away by the river.

  3. Sinkhole - Wikipedia

    en.wikipedia.org/wiki/Sinkhole

    Teiq Sinkhole (Taiq, Teeq, Tayq) in Oman is one of the largest sinkholes in the world by volume: 90,000,000 m 3 (3.2 × 10 9 cu ft). Several perennial wadis fall with spectacular waterfalls into this 250 m (820 ft) deep sinkhole. [66] Xiaozhai Tiankeng – Chongqing, China. Double nested sinkhole with vertical walls, 662 m (2,172 ft) deep. [67]

  4. Great Blue Hole - Wikipedia

    en.wikipedia.org/wiki/Great_Blue_Hole

    The Great Blue Hole is a large marine sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 70 km (43 mi) from the mainland and Belize City. The hole is circular in shape, 318 m (1,043 ft) across and 124 m (407 ft) deep. [1] [2] It has a surface area of 70,650 square metres (760,500 sq ft).

  5. Scientists Are Planning on Plunging Into the World’s ‘Portal ...

    www.aol.com/scientists-planning-plunging-world...

    Known as Dean’s Blue Hole, this geological wonder located off the coast of Long Island is a staggering 663 feet deep, making it one of the deepest blue holes in the world and also an area ripe ...

  6. PHOTOS: Sinkholes as deep as eight-story buildings form along ...

    www.aol.com/news/2015-07-28-photos-sinkholes-as...

    The Dead Sea is disappearing at an alarming rate, leaving behind thousands of sinkholes that are chipping away at the coastline's vibrant and touristy atmosphere. The Dead Sea - which is actually ...

  7. New Jersey sinkhole: Photos show 40-foot-deep depression on ...

    www.aol.com/jersey-sinkhole-photos-show-40...

    Traffic can be seen backing up Thursday on Interstate 80 due to a sinkhole near Wharton, New Jersey. In the past 15 years, sinkhole damage has cost an average of $300 million a year in the United ...

  8. Red Lake (Croatia) - Wikipedia

    en.wikipedia.org/wiki/Red_Lake_(Croatia)

    Red Lake (Croatian: Crveno jezero) is a sinkhole containing a karst lake near the city of Imotski, Croatia.It is known for its numerous caves and high cliffs, reaching over 241 metres (791 ft) above normal water level and continuing below the water level.

  9. Foiba - Wikipedia

    en.wikipedia.org/wiki/Foiba

    Grotta Plutone is a foiba close to Basovizza, Trieste A foiba (from Italian: pronounced; plural: foibe or foibas)—jama (pronounced) in South Slavic languages scientific and colloquial vocabulary (borrowed since early research in the Western Balkan Dinaric Alpine karst)—is a type of deep natural sinkhole, doline, or sink, and is a collapsed portion of bedrock above a void.