Speak to Karuk at Riplash Strand, southwest of Valiance Keep.
I see that you are very eager to help, <name>. You didn't come all the way to Northrend to stay holed up in a city! I've just the task for you... something that'll take you far away from here.
We've long sought to gain the favor of the tuskarr native to Northrend. Recently a young tuskarr came to us seeking help, something we couldn't offer at the time.
Now that you're around, maybe you can lend him a hand. Look for Karuk near the Riplash Strand, southwest of here, and see what you can do to help.