The Stonecore is a 5-man dungeon designed for players leveling through Deepholm. It is located high in the Temple of Earth and requires a flying mount to reach. Once a sacred ground for the denizens of Deepholm, the Stonecore has almost completely fallen under the control of the Twilight Hammer. The High Priestess Azil herself is in charge here, but players may be more excited to see Millhouse Manastorm, who makes a brief appearance in the beginning of the dungeon.

This is a popular dungeon among players as the second boss, Slabhide, drops Reins of the Vitreous Stone Drake on both Normal and Heroic.