The book referring to it said it was in the zone after the Southern Plains. But the only three areas we found from the Southern Plains were the Orc areas, the Goblin caves, and the Feltman Trail (or something like that). Then in the Feltman trail you had the mines, castle ruins (with earth elementals), and swamp.
Not sure what was going on there. Were we missing something obvious?
( EXPLAINED ) Warrior Lich Castle
Re: Warrior Lich Castle
It is in one of those areas and observe the information about the secret is in the water...