When the Purple Planet began its slow decline, factions arose to vie for the final resources of the dying world. In the days of the Last Wars, the Ascendant Masters used their knowledge of cybernetics and genetic engineering to create increasingly powerful and grotesque biological weapons. One such weapon was Sotark the Destroyer of the long lost House Memniscene. Damaged and placed in a cryogenic regeneration capsule, Sotark has slept away the ages while the House above him eroded away under the weirdling sun. Over time, the capsule has failed, but still Sotark sleeps on, diminished, but not destroyed.

The Bunker transports the party from their starting hex to a destination 2 hexes away. It can be placed anywhere on the Purple Planet map that does not already contain a numbered encounter. It could be hidden beneath the fecund growth of the mushroom forests, lost in the broken lands, amid the Ancestor Peaks, or uncovered by a sand storm in the wastes.