Several High Elves have reported strange occurrences near the Ruins of Erraneth, along the Isle's edge. They tell tales of ripples of light that fade in and out of existence, and glimpses of strange faces and even stranger creatures. All these things have been preceded by the passing of the Dark Elves.
The fact that the shore's edge rests above a ley line can hardly be a coincidence. Should these apparitions be real, I fear that it means my dark cousins have unleashed ... something unspeakable.
You must confirm these claims, and then report your findings to Captain Caduin, in Chrace.
Particulars
Find the ley line anomaly along the shore, south of the Ruins of Erraneth. Inspect it, and then report to the tower within the Cliffs of Ushuru in Chrace, south of Yenlui. There you will find Captain Caduin Goldbough.