User Summary: The Underdoom is part of Caverns Deep! The Underdoom is a complete kit with multiple subcomponents to build the Underdoom Encounter Area in Caverns Deep! It is made of "Dwarvenite" and includes some metal and magnetized parts. Some parts have LED circuitry (switch, battery, and socket) to support LED lighting attachments. This item was initially available as an add-on for the Build Your own Cavern pledge level and included in one of the other pledge levels during the Caverns Deep! Kickstarter. The item is available in painted and unpainted versions. The Underdoom contains the following subsets: The Underdoom - Core Pack 14 The Underdoom - Adventure Pack 14 Cave Door Pack Villain Pack Misty Gateway Pack Stairway To Violence Vile Mushroom Pack X2 The Underdoom - Terrain Tray Passage Transition Pack Trifecta Terrain Pack X2 LED Wall Pack Hollow Elevation Blocks x2 Entrance Riser Pack Stalagmite Pack x2 Natural Bridge Cave Cliff Pack x2 Double Door Pack Driftstone Pack Rising Elevation Pack x2