Yes thats right , that would be the Guanche as they are known here !! They were sadly exterminated over a certain period by the arrival of the Spanish Conquistadores under of course Columbus !! Remenants of the the lost civilisation of Atlantis ?? They were actually themselves cave dwellers when Columbus arrived ! There are theories that say that they might be natives of the Sahara that navigated from Morocco, but one wonders why would anyone do that, for what purpose ?? To live in a cave on a very vlocanic island ?? Seems strange to me !!