The Abandoned Thaig is an old thaig at the west end of Sundermount in the Free Marches. It becomes accessible in Act 2 via a cave entrance marked "Recently Opened Passage". Hidden Dungeon is its name in Act 3.
The thaig contains one of the Evil Tomes of Tarohne from the Forbidden Knowledge quest, and perhaps in consequence has become infested with undead and demons. There are also some stone golems and a Nexus Golem, presumably left behind when the thaig was abandoned.
(Act 2), on the other side of the room from the Nexus Golem. This item is related to the Forbidden Knowledge quest.
- Main article: Abandoned Thaig (strategy)
- In Act 3, as you enter you will encounter skeleton archers and corpses and, in the hallway, one arcane horror and one revenant along with several skeleton archers and corpses. There will be no enemies in the area with the Nexus Golem.
- pcxbox360ps3(1.04): There seems to be a bug that after the end of the long 5 phased battle explained above, no XP will be given as reward.
- pcxbox360(1.04): All 5 waves of enemies in the center room can spawn at the same time.