As part of a science experiment, a man has spent a record-breaking length of time alone down a hole, but an hour before he's due to re-emerge, something goes wrong and his colleagues have to go in to rescue him.

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Main Cast: Barbara Cupisti, Pietro Genuardi, Lorenzo Majnoni, Giacomo Rossi Stuart, Gaetano Russo, Andrea Damiano, Mario Luzzi, Paul Müller

Director: Umberto Lenzi

Writer: Olga Pehar

Editor:

Cinematographer:

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