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.
Kinderle Cave
The entrance to the cave is located at an altitude of 94 m and is connected to an inclined tunnel. In the tunnel is a glacier measuring 720 square m and a thickness of 8 m. Various stalagmites grow on the glacier. The length of the cave is 8130 m, including 230 m under water. The volume of the cave is 229600 cubic meters, the floor area is 39400 square meters. The average width of the pass is 5.4 m, the height is 7.1 m. The amplitude of the corridors is 215 m, this is the deepest cave in the Urals. Around the cave grows cannabis, so the Bashkirs called the cave Kinderle. They kept meat on the glacier in the summer.