Sima Martel, Natural sinkhole in Sarisariñama tepui, Venezuela
The Sima Martel sinkhole extends 248 meters deep into the quartzite rock formation, featuring a substantial width of 502 meters at its opening point.
Pilot Harry Gibson first spotted this geological formation during an aerial survey in 1961, with initial exploration taking place in 1971 followed by detailed studies in 1976.
The sinkhole bears the name of renowned speleologist Édouard-Alfred Martel, reflecting the scientific community's recognition of his contributions to cave exploration studies.
The location requires special permits for research visits, and accessing the site involves coordinating with authorities of Jaua-Sarisariñama National Park in Bolívar State.
The base of Sima Martel contains a forest patch and black mineral stalactites made of litiophorite, forming an isolated ecosystem different from other tepui environments.
Location: Venezuela
GPS coordinates: 4.67760,-64.22210
Latest update: March 4, 2025 18:48
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