Sanctum takes place in underground caves. There’s lots of rock climbing, scuba diving, and all kinds of dangerous, claustrophobic situations. It is a drama that plays out more like a horror movie. The movie is inspired by a true story, but the characters and what happens to them is fictitious. It takes a strong stomach to watch this movie – and undoubtedly there is an audience for it, probably the same audience that likes 127 Hours. The movie is well done technically, but the dialogue is a little cliche.
The 3-D action-thriller Sanctum, from executive producer James Cameron, follows a team of underwater cave divers on a treacherous expedition to the largest, most beautiful and least accessible cave system on Earth. When a tropical storm forces them deep into the caverns, they must fight raging water, deadly terrain and creeping panic as they search for an unknown escape route to the sea. Master diver Frank McGuire (Richard Roxburgh) has explored the South Pacific's Esa-ala Caves for months. But when his exit is cut off in a flash flood, Frank's team--including 17-year-old son Josh (Rhys Wakefield) and financier Carl Hurley (Ioan Gruffudd)--are forced to radically alter plans. With dwindling supplies, the crew must navigate an underwater labyrinth to make it out. Soon, they are confronted with the unavoidable question: Can they survive, or will they be trapped forever?