A huge burrowing machine tunnels out of control at ferocious speed, cutting clean through to the center of the earth, to the twilight world of pellucidar. Once there, Dr. Perry and David Innes are threatened by half human creatures, lizard-like birds, and man-eating plants.
Unfortunately the movie At the Earth's Core is not yet available on HBO Max.
| Production | Harry N. Blum | Executive Producer |
| Directing | Kevin Connor | Director |
| Production | John Dark | Producer |
| Writing | Milton Subotsky | Screenplay |
| Production | Max Rosenberg | Producer |
| Art | Maurice Carter | Production Design |
| Sound | Michael Vickers | Original Music Composer |
| Camera | Alan Hume | Director of Photography |
| Editing | Barry Peters | Editor |
| Production | Milton Subotsky | Producer |
| Art | Bert Davey | Art Direction |
| Writing | Edgar Rice Burroughs | Novel |
| Editing | John Ireland | Editor |
| Crew | Ian Wingrove | Special Effects |
| Visual Effects | Charles Staffell | Visual Effects |
