Although they seek to consume living creatures, purple worms also consume vast amounts of dirt and minerals as they burrow underground. The insides of a purple worm may contain a considerable number of gemstones and other items able to withstand the corrosive acid inside its gullet. In areas filled with valuable minerals, such as those near dwarven mines, the natural tunnels created by burrowing purple worms are often filled with vast amounts of unrefined ores.