Owl Wing Thicket is a series of caves in southern Winterspring. They host a large number of berserk, moontouched, and crazed owlbeasts. It is here that the ancient Guardians of Elune tell how the moonkin came into the world (in a quest chain exclusive to the Alliance), guided by Ranshalla.
Ranshalla has been removed from the entrance to the Thicket and replaced with a neutral quest giver, Jadrag the Slicer. He is an injured orc who apparently had an unfortunate run-in with the Owlbeasts while hunting for artifacts. It is unknown where Ranshalla has been moved to, if she still exists.
Owl Wing Thicket Digsite
The area is also a night elf archaeology dig site.