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Written and directed by British filmmaker Neil Marshall (Dog Soldiers), and produced by the UK’s Christian Colson, this stomach-churning adventure-horror is as engrossing as it is claustrophobic. With fantastic performances from its all-women cast, including Natalie Mendoza, Scottish actor Shauna Macdonald and the UK’s Alex Reid, the thriller is co-produced by Guildford-based Celador Films and London-based Pathe UK.

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Synopsis

A year after a traumatic incident, Sarah (Shauna Macdonald) goes to North Carolina to spend time exploring caves with some friends. After descending and finding puzzling cave paintings as well as signs of an earlier expedition, the women discover they are not alone, as they’re met with terrifying underground predators who ruthlessly hunt them.