Complete both The Captain's Lament quest, which begins in Isle of Mara and Fond Memories quest, which begins in Obol Plains. You also have to return to Captain Ethan (Captain's Lament).
Steps
Find a Wayward guard, who reports seeing a child heading to the northwest path ( -353, 11, -48 ) Copy/waypoint -353, 11, -48
Find the missing child Qho Augren on top the rock wall at ( -34, 81, 18 ) Copy/waypoint -34.18, 80.53, 17.59
Talk to Qho near the tourbillion ( -680, 1, 70 ) Copy/waypoint -680, 1, 70 Qho will enter the tourbillion to Eidolon Jungle (Drop down the round pit).
Talk to Qho near the tourbillion ( -2454, 207, 618 ) Copy/waypoint -2454, 207, 618
Talk to Qho near the entrance to the Temple of the Faceless ( -2162, 222, 767 ) Copy/waypoint -2162, 222, 767. He will get an Attitude and run off into the woods, go find him.
Talk to Qho near Gultgha ( -1375, 217, 593 ) Copy/waypoint -1375, 217, 593
Find a small tree to keep Qho quiet (clickable tree at ( -1332, 218, 570 ) Copy/waypoint -1332, 218, 570
Talk to Qho near Gultgha ( -1375, 217, 593 ) Copy/waypoint -1375, 217, 593
Talk to Qho at ( -444, -9, 555 ) Copy/waypoint -444, -9, 555
Talk to Qho near the base camp ( -67, 13, 160 ) Copy/waypoint -67, 13, 160