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 meters.
Lamprechtsofen
As of 2014, Lamprechtsofen is the fourth-deepest cave in the world, since two more Georgian caves have since been discovered to be deeper. Sarma Cave is and Illyuzia-Mezhonnogo-Snezhnaya Cave is .