An archaeologist finds an ancient funeral cave and intact skulls containing jars of bone marrow. When she studies one of the jars back at the lab, she accidentally exposes herself to its contents and experiences a strange transformation.

A young woman who is a Speleologist teams up to explore an extremely deep cavern with a Geophysicist who believes that the earth is hollow and the Underworld is accessible through caves. Once sealed by Aboriginals, the pair soon regrets reopening the cave.

When a group of boys happen upon a prehistoric cave in France while out hunting for rabbits, they must decide who is trustworthy enough to share their secret with.

A group of explorers take a traveler to tour a cave where ghosts sing songs forgotten by the living. Upon entering, they realize they underestimated the effect the songs have on the psyche.

An archaeologist on a dig in Africa uncovers a shard that brings the dark magic of the Brotherhood of the Higher Ones to the present day.

An intrepid caver, determined to save the woman she loves, descends into caverns where beautiful music supposedly drives humans to insanity and violence.

A woman is trapped for years inside a cave with basic survival supplies, and she tries to get out.

An old archaeologist studying the southwestern United States has a way of making spectacular finds. When he is about to be ousted from his university position by the younger generation, he decides to take his fate into his own hands and leave the physical world behind.

While hiking with his two young children, a man falls to his doom in a cavern called the Bottomless Well, leaving his son and daughter to race to save his life.

A group of college students home for their last summer break before graduation may get more than they bargained for when they plan to excavate an ancient relic.