A series of films centre around six friends reunite for a caving expedition. Their adventure soon goes horribly wrong when a collapse traps them deep underground and they find themselves pursued ...

When the Ring of Fire starts heating up with an unprecedented amount of volcanic activity a team of scientists are gathered to prevent a global catastrophe. But one of the scientists realizes ...

A series of films centre around six friends reunite for a caving expedition. Their adventure soon goes horribly wrong when a collapse traps them deep underground and they find themselves pursued ...

Distraught, confused, and half-wild with fear, Sarah Carter emerges alone from the Appalachian cave system where she encountered unspeakable terrors. Unable to plausibly explain to the authorities ...