Directed by Alister Grierson, this 2011 film is a gripping adventure thriller that delves into the perilous world of cave diving. The story follows a team of divers, led by a seasoned explorer, as they embark on an 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 navigate treacherous waters and dwindling resources to find a way out. The film stars Richard Roxburgh and Ioan Gruffudd, whose performances add depth to the intense narrative. For those interested, it can be viewed for free on 123Movies / Movies123.