Hang Son Doong - Son Trach commune in Bo Trach district, Quang Binh province - is the largest natural caves in the world. This cave is located in the caves o...
- Sandy Erba
Alex Alvarez, Franco Attolini, and Alberto (Beto) Nava are members of PET (Projecto Espeleológico de Tulum), an organization that specializes in the explorat...
DISCLAIMER: I claim no copyright or ownership of this material, it belongs to National Geographicl and is uploaded here under fair use guidelines as educatio...
From UFOTV®, accept no imitations. Beneath the pyramids of Egypt lies a lost underworld of catacombs, hewn chambers and cave tunnels that have remained unexp...
There is more than just what you see or hear folks! This place is truly amazing! http://kartcent.ru/krymskie-piramidy-priznali-vo-vsem-mire/#axzz2vUrvGbH7.
Subscribe to ITN News: http://bit.ly/1bmWO8h A group of researchers in Chile have discovered 20 underground caves which could help unlock mysteries about how...
Geologic summary of the surface & subsurface features at Mammoth Cave, Kentucky, USA. Filmed & composed by Tabatha Beaver and James St. John (both School of ...
- Solomon Kane
There is an ancient legend among the Hindus of India that tells of a civilization of immense beauty beneath central Asia. Several underground cities are said...
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