Map of Traitor’s Vault delve in Summerset zone, including the location of skyshard and boss.

How to get to skyshard in Traitor’s Vault: from the entrance, go accross the bridge, through the room with the wardrobes, exiting to the East. Stairs lead up, and exit to the north, follow the hallway, which loops around and crosses back over the eastern room on the third floor, corridor turns west, and leads to the skyshard.