Abismo Guy Collet
|Abismo Guy Collet|
|Location||Barcelos, Amazonas, Brazil|
|Depth||671 metres (2,201 ft)|
The Abismo Guy Collet (SP-090) is the deepest cave in South America, and the deepest in the world that is formed in quartzite. Located in a tepui in northern Brazil near the border with Venezuela, this cave was first explored by cavers in 2006 to a depth of 671 meters.
- A Ong Akakor Geographical Exploring Descobre a Caverna Mais Profunda do Mundo em Quartzito. Ayub, Soraya; 39th Brazilian Speleological Congress, June 2007
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