Bring 25 Split Bone Necklaces to Kin'weelay at the Grom'gol Base camp.
Now that you have gathered Bloodscalp trophies, I have another task for you. The Skullsplitter tribe of trolls live to the southeast, and for years we have warred with them. Although the Darkspears no longer dwell in Stranglethorn, we are bound to our conflict with the Skullsplitters.
So, hunt them. Gather their Split Bone Necklaces and return to me. Aid us in our war, and you will earn the friendship of the Darkspears.