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Watch Deadly Descent full movie online free in HD with English subtitles – no download needed.

Two areas in the world remain unexplored by man, the bottom of the ocean, and caves. Science Channel takes viewers underground into the extraordinary and dangerous world of deep cave exploration. Cave holds secrets to solving mankind's biggest challenges, including clues to the geologic mysteries of our planet and revolutionary new cures in medicine. But scientists aren't physically or mentally capable of enduring the treacherous underworld of deep cave exploration. Instead, they depend on an elite team of "cavers" to undertake those missions on a "DEADLY DESCENT".