You follow the unsettled scholar, who has additional measurements to make in Urth's Fount.
This quest is available if you have completed the quest Where We Are Needed.
Starting the Quest
Talk to the Unsettled Scholar at Camp Tranquil in the South Shroud to begin the quest.
Speak with the Unsettled Scholar
Go east to where the orange arrow is pointing in the minimap and talk to the Unsettled Scholar.
Go west to the sparkling Destination and check on it. There will be a cutscene.
Speak with Minfilia
Go to Revenant's Toll in Mor Dhona and enter the Rising Stones. Go into the Solar and talk to Minfilia to complete the quest.