This scene by Didier Burtin reminds me of the hit 1990 monster movie Tremors starting Kevin Bacon. It features a worm-like monster of unknown origin that terrifies folks in a desert town. It slithers underground and feels the vibrations on the surface to detect – and then rise to devour – its next victim. So, if there’s no fossil history of these gargantuan man-eating snakes, I can only deduce they must be of an alien origin.