Take Shindrell's Note to Kayneth Stillwind in Forest Song.
The druid Kayneth Stillwind sent word to me. He would like a report of the happenings along our coast and in the forests surrounding Astranaar. He fears there is a corruption moving through Ashenvale... and he may be right.
Here, take my report to him. You will find him in the shrine of Forest Song, in the Nightsong Woods to the east.