City Beneath the Sea 1971

Synopsis:

A group of 21st-century colonists inhabit an underwater city called Pacifica. Originally intended as a purely scientific installation, the U. S. government wants to stash all its gold reserves from Fort Knox there, along with a fantastic new radioactive element. The brother of Pacifica's returning former commander plans to steal the gold and on top of that, the city faces destruction by an asteroid from outer space

Directed by: Irwin Allen
Release date: 1971-01-25
Runtime: 98 minutes
Tagline: Theirs was the most dangerous mission in history . . . to save the world from total destruction!
Cast:
Stuart Whitman
Stuart Whitman
Admiral Michael Matthews 
Robert Wagner
Robert Wagner
Brett 
Rosemary Forsyth
Rosemary Forsyth
Lia Holmes 
Robert Colbert
Robert Colbert
Commander Woody Patterson 
Burr DeBenning
Burr DeBenning
Aguila (as Burr De Benning) 
Susana Miranda
Susana Miranda
Elena