Undermountain Dwarven Internment Camp Ruins

Publisher's blurb: Undermountain Dwarven Internment Camp Ruins A crumbling multi-level dwarven internment camp, built deep underground next to a lava flow. Includes a one-shot adventure involving the stolen heart of the mountain which is causing deadly earthquakes, and a hostage situation. Your players must make a difficult choice between saving an innocent man, or putting an end to the quakes.