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USA: Sony Pictures / Screen Gems
UK: Entertainment Film Distributors
Cast: Cole Hauser, Morris Chestnut, Eddie Cibrian, Rick Ravanello, Marcel Iures, Kieran Darcy-Smith, Daniel Dae Kim, Lena Headey, Piper Perabo, Vlad Radescu, Simon Kunz, David Kennedy, Alin Panc, Zoltan Butuc, Brian Steele
Director: Bruce Hunt
Countries: USA / Germany
USA & UK: 97 mins
USA Rated: PG-13 for intense creature violence
UK Certificate: 12A contains moderately intense horror and violence
USA Release Date: 26 August 2005
UK Release Date: 26 August 2005
Deep in the Romanian forest, a team of scientists stumbles upon the ruins of a 13th century abbey. On further inspection they make a startling discovery, the abbey is built over the entrance to a giant underground cave system. Local biologists believe the cave could home to an undiscovered ecosystem, so they hire a group of American cave explorers to help them investigate its depths.
Jack (Cole Hauser) and his brother Tyler (Eddie Cibrian) are thrill seeking professional cave explorers who run a team of the top divers in the world. They arrive in Romania with all the latest equipment, including a new type of scuba tank allowing a diver to remain submerged for up to 24 hours.
The crack unit, which includes Charlie (Piper Perabo) and Buchanan (Morris Chestnut), immediately begins their exploration. But what they find deep inside the cave is not just a new ecosystem, but an entirely new species altogether...