Use the spire in Tenebrous Tangle (Take this one ( -721, 144, -149 ) /waypoint -721, 144, -149, the one next to Tenebrous Landing does not work for updating this step.) to go to the The Barren Sky. Speak with Jabber Longwind who is standing next to teleporter spire in Barren Sky. Take the cloud to Whisperwind Isle and climb the cliffs up to the Elders. Talk to Graywind the Elder ( -677, 8, -509 ) /waypoint -677, 8.4, -509.
Note: Even though the portal revamp lets you use any Ulteran Spire to get to Barren Sky, to update the quest you must use the one on Vultak Scavanging Site.