Find and kill the Den Mother.
The survival of our people and lands comes at unfortunate costs, [player].
You have spilled the blood of nature's servants; many sick animals you have felled. The people of Auberdine are indebted to you, for the forest's pain is eased - even if only for a moment.
I have one final task for you, but be warned, you will have to kill again. It is my hope that this will be the last time I call upon you, [player].
In a cave to the northeast, near Bashal'Aran, resides the Den Mother. Slay her.