Special Features
New 2k restoration from the original camera negative; U.S. release version: Hercules in the Haunted World (with optional English SDH Subtitles); European release version: Vampire gegen Herakles; aka Ercole al centro della terra (Italian dialogue with optionel English Subtitles); U.K. release version: Hercules in the Center of the Earth; Audio Commentary by Tim Lucas, author of Maria Bovo: All the Colors of the Dark; Interview with actor George Ardisson; U.S. Theatrical Trailer; U.K. Theatrical Trailer