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.
| Directing | Kevin Connor | Director |
| Writing | Milton Subotsky | Screenplay |
| Production | Harry N. Blum | Executive Producer |
| Production | John Dark | Producer |
| Production | Max Rosenberg | Producer |
| Art | Maurice Carter | Production Design |
| Writing | Edgar Rice Burroughs | Novel |
| Production | Milton Subotsky | Producer |
| Sound | Michael Vickers | Original Music Composer |
| Camera | Alan Hume | Director of Photography |
| Editing | John Ireland | Editor |
| Editing | Barry Peters | Editor |
| Art | Bert Davey | Art Direction |
| Crew | Ian Wingrove | Special Effects |
| Visual Effects | Charles Staffell | Visual Effects |
