Travel to Darkshire in Duskwood and speak with Anchorite Delan.

I am told that there is a thorn in the side of the kingdom of Stormwind. It is known as Duskwood, and it is a place that is filled with evil and the vile stench of undeath.

As we're trying to help as much as we can, I would like for you to travel southeast to the main human settlement there, named Darkshire. Anchorite Delan will be awaiting your arrival.