This Skyshard is deep inside The Ebonheart Pact area. POI that hides it is called Temple of the Ancestor Moths. You can discern it from distance as it has huge a cathedral looking building called Temple of the Ancestor Moths. This cathedral hides our collectible. Enter the cathedral, and as you take a couple of steps turn back toward the doors. You can now spot a door that leads to the catacombs of the Temple of the Moth. Enter the catacombs and you can should spot the shard right away.
Find and enter Temple of the Ancestor Moths.
Find and enter Catacombs of the Temple of the Moth basement.
There is our collectible.