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After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.

Director : Neil Marshall

Writer : Neil Marshall

Cast

Shauna Macdonald

Natalie Mendoza

Alex Reid

MyAnna Buring

Saskia Mulder

Nora-Jane Noone