Desert
From Grimhaven Wiki
Desert is a custom map. You can access it by entering Thais depot and go down a floor there you will find a teleport.
The Desert is also home to the Secrets of Apherumes Quest.
Creatures that can be found here:
Lion, Wasp, Skeleton, Skeleton Warrior, Scarab, Nomads, Pirate Marauder, Pirate Cutthroat, Pirate Buccaneer, Pirate Corsair, Pirate Ghost, Pirate Skeleton, Bone Beast, Dragon, Dragon Lord, Dragon Lord Hatchling, Elder Wyrm, Noonflare Asura, Midnight Asura, Hellspawn, Ghastly Dragon, Undead Dragon, Grim reaper, Blightwalker, Spectre, Hand of Cursed Fate, Betrayed Wraith and Lost Soul.
For more information about where check out Spawns.