Overview
A documentary filmmaker turns his lens on an enigmatic conspiracy theorist who claims he's found the entrance to a vast underground city populated entirely by monsters.
Trailer
Crew
DirectorAdam Green
WriterAdam Green
Cast
Ray Wise
William Dekker
Adam Green
Self
Kane Hodder
Self
Mick Garris
Self
Rileah Vanderbilt
Self
Josh Ethier
Self / Vance / Little Bigfoot
Tom Holland
Himself
Sarah Elbert
Self
Alex Pardee
Self / Park Ranger
Nic Henley
Harlequin
Caitlyn Brisbin
Tombstone
Robert Pendergraft
Shadow
Steve Agee
Self
Steven Barton
Self
Dave Brockie
Oderus Urungus
Don Coscarelli
Self
Evan Dickson
Self
Corri English
Self
Arwen Green
Self
Lloyd Kaufman
Self
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Keywords
monsternightmarebiographywoodsmockumentarycreatureartfound footagehorror filmmakingunderground tunnelfound footage adjacent
Details
TMDb Votes
159
Added May 14, 2026Updated Jun 4, 2026