Reg Park returns as Herc, who doesn't shirk from the task of returning with the cure for his dying beloved...even if it means a descent into the bowels of Hell! And demon lord Christopher Lee is determined to see that he never resurfaces! Mario Bava directs. AKA: "Hercules in the Center of the Earth," "Hercules vs. the Vampires." 82 min. Widescreen; Soundtrack: English (dubbed). Dubbed in English.