Abismo Guy Collet

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 m (2, 201 ft). Sima Pumacocha in Peru held the previous depth record in South America, determined to be 638 m (2, 093 ft) deep in 2004.