In the northern part of Darkshore runs the Cliffspring River, flowing down from the lands now known as Felwood.  As the river flows out and empties out into the Mist's Edge, travel north to where deepest parts of the ocean begin.  A stone formation that some call the Stone Claw due it its shape is where you may find what you seek.$B$BBe warned - threshers gather by the Stone Claw, and will attack those who trespass on their territory.