The Tunnel is a 2011 thriller about a woman reporter who ventures into a restricted subway tunnels with her 3 assistants in research a story. Soon they discover that they are not the only ones in the tunnel. Sort of like The Blair Witch Project meets The Descent meets .REC.
An investigation into a government cover-up leads to a network of abandoned train tunnels deep beneath the heart of Sydney. As a journalist and her crew hunt for the story it quickly becomes clear the story is hunting them.