The Mausoleum is a collection of graves located on a small island off the coast of Morytania. The bridge leading to the island is broken, and the only way of getting to it is through the Experiment cave during or after the Creature of Fenkenstrain quest. East of Fenkenstrain's Castle a small graveyard can be found, and by pushing on the east memorial, the dungeon entrance will open. The stairs to the mausoleum can be found at the other end of the cave, in the north-west corner. The only things of interest here are a few graves ransacked during Creature of Fenkenstrain.
- The island is a possible destination for a clue during a level two Treasure Trail.
- Despite the island being called the Mausoleum, no mausoleum is present on the island, only the three graves of the lords.