Storyline:
Two astronauts, after breaking the speed of light, accidently travel back in time to prehistoric Earth. Unable to return, they make friends with the "natives".

Cast:
Frank Aletter (as Mac, 26 episodes, 1966-1967), Jack Mullaney (as Hector, 26 episodes, 1966-1967), Joe E. Ross (as Gronk, 26 episodes, 1966-1967), Cliff Norton (as Boss, 20 episodes, 1966-1967), Mike Mazurki (as Clon, 19 episodes, 1966-1967)

Medium: Unknown,

Loaned: No

Aspect ratio: 4:3