Universal has released the first trailer for the James Cameron-produced action adventure Sanctum [JCSNC] on Apple. Shot in native 3D, the film "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." Richard Roxburgh [RROXB] and Ioan Gruffudd {IGRUF] lead the cast.