- Not to be confused with Caed Dhu.
Kaer Dhu is a ruined fortress in central Ard Skellig, across the swamp from Fayrlund. Kaer Dhu contains some Griffin School Gear and guarded treasure. Beware of high-level nekkers and ulfhedinn that are prowling the area. Kaer Dhu contains the entrance to mine tunnels which exit on the other side of the mountain.