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.
Harwood Hole
Harwoods Hole is a cave system located in the northwest of the South Island of New Zealand. It is one of several important cave systems in Takaka Hill, between Golden Bay and Tasman Bay. Starting at the surface as a 50-metre round entrance and descending 183 metres, Harwood Hole is New Zealand's deepest vertical shaft. Further in it connects with "Starlight Cave". The long rope descent is considered one of the most spectacular parts of the caving experience at Harwood's. Harwood's Hole has an overall depth of 357 m.