The Tunnel (2011) is a critically acclaimed Australian horror film presented in a found-footage mockumentary style
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One interesting fact about The Tunnel is that it was released for free online via BitTorrent as an experiment. The filmmakers encouraged piracy, believing that a wider audience would lead to cult success. They were right. This makes it incredibly easy to find a legal (or semi-legal) copy to pair with your Vietsub file. the tunnel 2011 vietsub