Kill 8 Boulderfist Ogres and 10 Boulderfist Enforcers, then find Drum Fel in the Hammerfall outpost in Arathi Highlands.
Weaklings... all of them. You, [class], what are you looking at? Think you're something special, huh? Why not prove it?
The Hammerfall outpost in Arathi's under attack. Unless we send them help soon, their demise is imminent.
But before you go rushing off, you may want to test your skills first. Northeast of Stromgarde in Arathi is an ogre mound inhabited by the Boulderfist tribe. When you can handle the ogres and enforcers there, then report to Drum Fel in Hammerfall.