It has been theorized that the legend of the Cyclops arose from ancient Greeks digging up the skulls of mammoths and misinterpreting their huge nasal passages as eye sockets. If the theory is true that the legend of the Cyclops arose from ancient Greeks digging up the skulls of mammoths and misinterpreting their huge nasal passages as eye sockets, then perhaps this is how the titanic monsters should have looked. But their aim probably was not very good, as they had no depth perception, due to a lack of stereoscopic vision.