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The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
The Great Blue Hole, a giant submarine sinkhole, near Ambergris Caye, Belize. The following is a list of sinkholes, blue holes, dolines, crown holes, cenotes, and pit caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.
The deepest blue hole in the world is the Taam Ja' Blue Hole in Chetumal Bay, which was found to have a depth of more than 420 metres (1,380 ft) in 2024. [ 3 ] The second deepest is the Dragon Hole , or Longdong, in the South China Sea at 300.89 metres (987 ft) deep, [ 4 ] while the third deepest blue hole in the world is Dean's Blue Hole at ...
Called Dean’s Blue Hole (named after a Bahamian fisherman), this impressive marine formation, located in a protected bay west of Clarence Town, is the third-deepest blue hole in the world ...
In 2012, scientists exploring blue holes in the Bahamas discovered bacteria deep in the caves where no other life existed, potentially filling the knowledge “gap” on what types of lifeforms ...
At up to 115 feet wide and 663 feet deep, Dean's Blue Hole is the world's deepest blue hole-- and Nery dove right into the center of it, no oxygen tank included.
Dragon Hole, also known as Yongle Blue Hole (Traditional chinese:永樂藍洞) after the third Ming emperor, Yongle, was the deepest known blue hole in the world at 300.89 metres (987.2 ft) deep [1] until it was discovered that the Taam Ja' surpassed it in 2024. [2]
As the race in space was winding down, soviet scientists turned inwards. You'd never guess that this is the site of one of their great achievements. This hard-to-find rusty cap in the ruins of a ...