The Dismal Abode is a very small dungeon zone in Act III of Diablo III. It is always present in the Eternal Woods, which only appear in Adventure Mode.
The "dungeon" is the interior of a small cabin, which sits in the middle of the Woods, surrounded by some fortifications. It looks much like the cellar of several buildings in Act I, but with a drift of snow blown in through the open doorway. A fire burns in the hearth, but the occupant lies dead in front of it.
The Abode contains one or more chests of random type. Once a chest is touched, dozens of Frozen Torsos will crawl out of the walls in an ambush. There are various minor barrels and furniture in the building as well, which initially cannot be interacted with but become destructible once the fighting breaks out.