A party of tourists -- including a state senator, a park ranger who was her one-time lover, a cantankerous professor, and an escaped convict -- are trapped deep inside the caverns of an unnamed national park, rescued briefly, and then caught in a second cave-in.
Cast
Dennis Cole
Ranger Gene Pearson
Susan Sullivan
Senator Kate Lassiter
Leslie Nielsen
Joe Johnson
Ray Milland
Prof. Harrison Soames
Julie Sommars
Liz Johnson
Sheila Larken
Ann Soames
Lonny Chapman
Walt Charles
James Olson
Tom Arlen
Ivan Bonar
Doctor at Prison
David Westberg
Larry Munson
Todd Martin
Herb
Joseph Della Sorte
Cooper
William Bryant
Jack Miller
Michael Masters
Ray
Crew
Georg Fenady
Director
Norman Katkov
Writer
Dick Wormell
Editor
John M. Nickolaus Jr.
Director of Photography
Irwin Allen
Producer
Jack Baur
Casting
Paul Zastupnevich
Costume Design
Dorothea Long
Hairstylist
Dan Greenway
Makeup Artist
Ted Koerner
Special Effects
Richard LaSalle
Original Music Composer
Donald Harris
Music Editor
James Hassinger
Set Decoration
Paul Nuckles
Stunt Coordinator
Duane Alt
Art Direction
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