| Category | Oceanic |
| Location | Buccaneer Archipelago, Pearl Sea |
| Map | Tregmauroth |
Tregmauroth is an undersea mountain range of the Pearl Sea. It stretches from the deeps off the southern coasts of the Lands of Purity to the western edge of the Buccaneer Archipelago. Numerous aquatic races, fish, and other sea creatures dwell in this area.
The mountains are split down the middle by a deep canyon called Orat-Khagor. This dark region was once home to the Durkoth that descended into the seas from Necrocrypt.