Adventure At The Center Of The Earth (1965)

aka: Aventura Al Centro De La Tierra

Inspired by Jules Verne's Journey To The Center Of The Earth, a group of explorers encounter dinosaurs, a cyclops, winged bat creatures and rat faced monsters in the bowels of the earth. Filmed in actual caverns in Mexico. Stars Kitty de Hoyos and Javier Solís. (In Spanish language).