The Karuulm Slayer Dungeon is a dungeon found in the northwest portion of Zeah. The Dungeon requires Boots of Stone, Boots of Brimstone, or Boots of Granite to explore past the initial chamber without taking incredible amounts of damage (4 damage every 1/2 tick).
The dungeon contains multiple creatures, some introduced prior to the update, and some with the dungeon. The former found in the cave are Fire Giants, Greater Demons, and Hellhounds. The latter includes Sulphur Lizards, Wyrms, Drakes, Hydras and a larger boss varient, the Alchemical Hydra.