Abismo Guy Collet, Natural vertical shaft in Barcelos, Brazil
Located within a tepui formation, Abismo Guy Collet extends to a depth of 671 meters through layers of hard quartzite rock.
Brazilian and Italian explorers conducted the first documented descent of the vertical shaft in 2006, reaching its terminal lake at the bottom.
The cave bears the name of Guy Christian Collet, a French-Brazilian scientist who established foundations for speleological research in Brazil.
Specialized caving equipment, extensive training, and official permits are necessary to access this remote location in northern Amazonas state.
The formation holds records as both South America's deepest cave and the world's deepest cavity formed in quartzite stone.
Location: Barcelos
GPS coordinates: 0.87290,-63.37152
Latest update: March 11, 2025 23:19
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