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.
Table Mountain (Butte County, California)
The largest cave is located at Phantom Falls, and the deepest cave is at Little Phantom Falls, and actually requires crawling. Both are located in Coal Canyon. A small cave is also located at Flag Falls and Beatson Falls.