Plot: In Kyzl Kum Desert, Central Asia, a team of explorers learn of a newly discovered cave system and set out on an expedition to explore it. However as soon as they begin the descent, it quickly becomes clear that this was a secret that should have remained below the surface as members of the team find themselves caught in a desperate fight for their lives.
Alternative Plot: Spelunkers fall prey to a supernatural force deep within a labyrinth of Russian caves.
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