Bring 20 Shrunken Heads to Nimboya at the Grom'gol Base Camp.
We must find if Yenniku is dead.
Slay the Bloodscalp Headhunters and take from them their Shrunken Heads. You must gather many, many heads, and I will inspect them to make sure Yenniku's head is not among them.
And if Yenniku was killed by the Bloodscalps, then may a 600-year curse fall on the spirit of their chief, Gan'zulah!
Go, [player]. You may find many Headhunters at the ruins of Zuuldaia and Zul'Kunda, along the coast to the north.