A British motion picture At the Earth's Core was released in 1976. Its producers were Max J. Rosenberg, Milton Subotsky, and John Dark, and it was directed by Kevin Connor.

Doug McClure stars as David Innes, with Peter Cushing as Dr. Abner Perry. McClure is too old for the part—in the novel, David Innes begins his adventure when nineteen or twenty years old—but he may be the best part of the picture, playing a dashing, redoubtable hero. Cushing's polished performance also adds to the motion picture's appeal. Unfortunately, most of the rest of the picture verges on the amateurish. Only one special effect succeeds for a moment in creating the illusion of being in another world—the view of the city of the Mahars as seen from a cliff-side trail. Otherwise, the wires on the Mahars are visible, the giant monsters are in rubbery...