The Torture Zone (1968)

Boris Karloff stars in one of his final films as geo-biologist Dr. Mantel, whose colleagues find an intelligent, living rock inside a volcano. Aided by his lovely daughter Corine (Julissa), Mantel sets the rock up in a chamber in their space-age labs, and hooks it up to computers in order to extract its wisdom. To survive, the rock must be injected with the blood of terrified women, and for this purpose the scientists expose various scantily dressed females to an elaborate, cobweb filled chamber of horrors, replete with skeletons, spiders, a menacing dwarf, and a pool filled with blood and sea serpents Instead of helping these determined scientists, however, the ungrateful rock creature grows tentacles and learns to control the computers, and even the minds of some of the employees, including dim-witted Roland (Yerye Beirut). It's all too much for Dr. Mantel, who retires to bed for the remainder of the film, allowing his daughter to take things to kinky new levels, hiring strippers to dance for the rock, and even whipping and murdering naked, pleading girls for its amusement. Altogether this is a bizarre effort, which requires some viewer discretion.