Speak with Sauranok the Mystic at Grommash Hold in Orgrimmar.
I see you haven't yet spoken to my advisor, Sauranok the Mystic. He has been at my side since our campaign together in Northrend.
To assault the Twilight Highlands, we're going to need a map of the shoreline. I have tasked Sauranok with digging up this information. See if he can use your assistance! He is standing right next to me.