Sanctum (R)


Full of artificial exposition and rinky-dink dialogue, Sanctum is a 3-D slasher flick. Inside Papua, New Guinea’s vast cave system a group of cave-divers are trapped by a giant storm. Ioan Gruffudd is the rich adventurer whose money is paying for the expedition. Hardscrabble cave-master Frank (Richard Roxburgh) is in charge. Frank’s son Josh (Rhys Wakefield) proves to be a key ingredient on the mission. Sanctum should be an intensely claustrophobic adventure movie; it’s not.