Legend in the flesh, an adult purple worm measures over 65 feet and is able to burrow through the toughest of rocks. Its name comes from the color of its rough skin when it reflects light at certain angles.
The Sower of Life
Maelossas aren't the only reason life is possible in the Netherworld, it's also thanks to the work of purple worms. They're sowers of life, but extremely dangerous all the same. They could be compared to volcanoes: their presence is both destructive and fruitful. Through their wandering, they're even able to link continents together. Many adventurers have traveled down freshly dug tunnels, hoping to discover new lands. Duergar abyssal cities could never have been built without the tunnels dug under the ocean.
Deep-dwellers try to get close to them, but not too close… They set up many glyphs at the borders of their territories to keep purple worms away. The passing of these creatures, especially adults, can generate earthquakes and cave-ins. Purple worms gather in large sand deserts to lay their eggs. This way, their offspring begin life in a soft ground, before tackling harder and harder terrain.
Controlling Purple Worms
Some duergar study the use of purple worms in order to excavate the Netherworld at their leisure. While a long shot, this method seems very promising to them. Purple worms could also be of interest to the duergar militarily, if they could be lured toward their enemies. For this, they primarily use thumpers to attract purple worms. By using multiple thumpers working together, it could be possible to direct them on a desired path.
Gigantic, slimy worms with bodies 100' long and 8-10' thick. Bore tunnels through the earth and come to the surface to eat other creatures.