It’s probably best, if horror movies have taught me anything, not to go exploring underground.  As far as found footage films go, The Tunnel isn’t bad.  It didn’t make me ill from camera motion, so that puts it ahead of most recent efforts.  Some explanation of the monster would’ve been good, but even so, it does keep you watching.  The premise is that an Australian news team, in need of a big story, decides to go down into the tunnels that create a virtual second city under Sydney.  The story is that the government had planned to reclaim the water that filled some of the tunnels to help alleviate a drought.  The plans are suddenly and silently dropped, suggesting an untold story.  Knowing that the homeless use the tunnels, the team of four breaks in and finds evidence of squatters.  And more.

While getting some ambient sounds recorded, their audio engineer disappears.  Finding a room splattered with lots of blood, the remaining three have to decide whether to keep looking for him or try to go for help.  On the way they realize that some kind of humanoid monster is stalking them.  It attacks and kills a security guard who’d initially tried to keep the crew out.  The three, each of them attacked underground, manage to find their way to an active subway station.  But the producer dies while awaiting medical help.  The reporter, the only woman in the group, blames herself for putting her need for a big story over the welfare of her colleagues.  There’s also a fair bit of bitterness at having lost the producer when plenty of people, who might potentially help, were around.  Only the reporter and her cameraman survive.

Ever since The Blair Witch Project, it’s been tricky to determine which found footage horror films really work.  Paranormal Activity did.  And this one does too, at least to an extent.  Since they ostensibly tell you no more than the characters know, fixed answers are difficult to come by.  Thus we’re left wondering if the monster here is a human, mutated or not—it does move faster than most people can manage—and what its backstory might be.  The conceit of using tunnels to house it, while not unique, does offer some possibilities in the cinéma vérité realm.  It is a world of which few beyond the homeless and city engineers have direct experience, thus it’s foreign even to the locals like the news team.  Probably there are no monsters in such places, but caution, it seems to me, wouldn’t be misplaced.