These small mechanistically snailish creatures have cone shaped drill for shells that they use to bury deep into rock where they feed on minerals that they then use to further strengthen their shells. The biggest Drinell ever found had a Drill Shell of about 6 inches long. Like a snail they have slimy muscular bodies and two sensitive “eye" stalks. They are not much of a threat but can be a huge nuisance for tunnelers. There are tales of Drinell burying upwards and wrecking walker's feet; as well as a tale of a miner who was killed when a Drinell fell onto him when he wasn’t wearing his helmet. A tunnel with a large amount of Drinell inhabitants is very dangerous to explore as the walls are weakened greatly by the tunnels dug by the Drinell for food.