- Release Date: February 4, 2011
- Run Time: 1 hr 43 min
- Rating: R - disturbing images, some violence and language
- Cast: Richard Roxburgh, Ioan Gruffudd, Rhys Wakefield
- Director: Alister Grierson
- Genre: Action/Adventure, IMAX, Suspense/Thriller, 3D
Synopsis: Though the South Pacific's Esa-ala Caves are one of the least-accessible cave systems on Earth, skilled diver Frank McGuire (Richard Roxburgh) has explored it for months with his team (Ioan Gruffudd, Rhys Wakefield) . When a flash flood cuts off their exit, they are caught in a life-or-death situation. With supplies dwindling, the divers must navigate a treacherous labyrinth to find a new escape route or die in the process.