I wanted to know where all the dungeon locations are but only found boards for the dark and light so for those of you who are wondering just like me i thought i would go through the world on a hunt for these void only dungeons.enjoy.
1:Zone:Ruined Cliffs Level:Battlements Dungeon:Puzzling Path. As soon as you get in turn right
2:Zone:Ghostfang Widlands Level:Shadow Glen Dungeon:Time's Doom. It is in the south center of the map.
3:Zone:Arkan Moors Level:Well of Gloom Dungeon:Cave of Betrayal. It is on the east side of the well.
4:Zone:Valley of the Dead Level:Temple Gates Dungeon:Eternity Vault. Just as you pass through the giant grave yard like spot hug the left wall and you should see it.
I think there is one per zone if i'm wrong and you would like to correct me please do so. I hope this helps you out.