Sima Humboldt, Natural sinkhole cave in Sarisariñama tepui, Venezuela.
The Sima Humboldt extends 314 meters deep into the quartzite rock, with its upper rim measuring 352 meters and expanding to 502 meters at its base.
Initially spotted by pilot Harry Gibson in 1961, the first successful descent into the sinkhole took place in 1974 during an expedition led by Charles Brewer-Carías.
The local indigenous population navigates the surrounding region using curiaras, traditional canoes adapted to transport through the dense Venezuelan wilderness near the cave system.
Access to the sinkhole requires official research permits and helicopter transportation, as the nearest road ends several hundred kilometers from the tepui location.
The cave floor contains an isolated forest patch with its own ecosystem, hosting plant and animal species that have evolved separately from their surface counterparts.
Location: Bolívar
GPS coordinates: 4.68550,-64.21850
Latest update: May 26, 2025 09:57
Angel Falls
234.9 km
Canaima National Park
229.9 km
Auyantepui
229.9 km
Jaua-Sarisariñama National Park
556 m
Parima-Tapirapecó National Park
205.3 km
Serra do Tepequém
291.1 km
Ptari-tepui
292.8 km
Duida-Marahuaca National Park
176.3 km
Cueva Charles Brewer - Carías
212.9 km
Para Falls
184.6 km
Cerro Duida
214.3 km
Yutaje Falls
242.6 km
Sapo Falls
232.2 km
Aprada-tepui
212.2 km
Cerro Yaví Natural Monument
219.2 km
Anatoly Island
231.6 km
Capilla de Santa Teresita
291.3 km
Cerros Camani y Morrocoy Natural Monument
242.3 km
Parú-Euaja Massif Natural Monument
149.2 km
La Paragua Forest Reserve
255.6 km
Sierra Marutani Natural Monument
176.1 km
El Caura Forest Reserve
74.8 km
Serranía Yutajé y Coro-coro Natural Monument
249.2 km
Sierra Maigualida Natural Monument
169.6 km
Cerro Guanay Natural Monument
270 km
Acuerdo de Conservación Tzazenai
287.6 km
Mount Guaiquinima Natural Monument
144.1 km
Cerros Ichúm y Guanacoco Natural Monument
48.1 kmReviews
Visited this place? Tap the stars to rate it and share your experience / photos with the community! Try now! You can cancel it anytime.
Discover hidden gems everywhere you go!
From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.
A unique approach to discovering new places❞
— Le Figaro
All the places worth exploring❞
— France Info
A tailor-made excursion in just a few clicks❞
— 20 Minutes