| Abismo Guy Collet | |
|---|---|
| Location | Brazil |
| Depth | -671m |
| Discovery | 2006 |
| Geology | quartzite |
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.