The US military is running a test for a special type of radio transmitter, to be used to communicate with submarines, in a deep system of underground caves in Central America. When the signal from one of the transmitters suddenly disappears, a team of soldiers led by Major Elbert Stevens and cave specialists led by Rupert 'Wolf' Wolfsen including scientist Leslie Peterson are sent in to find out what happened. Exploring deep underground, they stumble upon a tribe of albino cave-dwellers who have apparently been isolated from the rest of the world for thousands of years. The cave-dwellers are hurt by radio frequencies and are able to see in infra-red frequencies, tracking the explorers by their body heat.
as Rupert 'Wolf' Wolfsen
as Major Elbert Stevens
as Leslie Peterson
as Frieda Shelley
as Ben Gannon
as Lt. George Barwell
as Lemurian Elder
as Hunter Prime
as Santos Arias
as Hector Lopez
as Lemurian
as Sgt. Neumann
as Major Castillo
as Hunter Second
as Jim White
as American Soldier
as Mercenary
as Mercenary
as Lemurian
as American Soldier
as American Soldier
as Lemurian (uncredited)
