At the Earth's Core 1976
Directed by Kevin Connor | Starring: Peter Cushing, Caroline Munro, Doug McClure, Godfrey James
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.