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.&nbsp;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.