You proceed west through the breadth of the Dravanian Forelands to reach the Dravanian Hinterlands.
Requirements
This quest is available if you have completed the quest Onward to Sharyalan, and have reached level 58.
Starting the Quest
Talk to Y'shtola in the Dravanian Forelands to begin the quest.
Journey into the Dravanian Hinterlands
Go southwest to where the orange arrow is pointing in the minimap. Go through the stone archway in the orange circle on the map to enter the Dravanian Hinterlands. There will be a cutscene.
Find a Place to Cross the Thaliak River
Go northwest until you reach a paved road. Follow it west to find a bridge. Cross the bridge, then you can optionally continue along the paved road for some optional dialogue with Y'shtola and Alphinaud. Continue north to where the orange arrow is pointing in the minimap. Continue north to reach a new area. There will be a cutscene.
Speak with Slowfix
Go northwest through the large archway, then turn right. You can attune to the Idyllshire Aetheryte now if you wish. Then go to the quest icon on the map and talk to Slowfix to complete the quest. There will be a cutscene. This one is important, so it is recommended to watch it either now or via the Unending Journey in an inn room.
Aether Current Quest
With the completion of this quest, you can now start the blue quest "Louder than Words" in the Dravanian Hinterlands. Completing that quest will attune you to an Aether Current in that area.
Next Main Scenario Quest
After you complete the quest, talk to Slowfix to accept the next quest: Golems Begone.