After a tragic accident, 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 by bloodthirsty creatures. As their friendships deteriorate, they find themselves in a desperate struggle to survive the creatures and each other.
Shauna Macdonald | Sarah | |
Natalie Mendoza | Juno | |
Alex Reid | Beth | |
Saskia Mulder | Rebecca | |
MyAnna Buring | Sam | |
Nora-Jane Noone | Holly |
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