Find Horzak Zignibble at the Orgrimmar Rocketway Exchange in Azshara.
You've done a bangup job getting our lumber operations in order. But word on the wire is that we're falling under our stone quota. You'd think if we could move mountains, we could gather up a few rocks...
Well, that's not my problem, but maybe you can make it yours. Report to Horzak Zignibble up ahead at the Orgrimmar Rocketway Exchange. See if you can't help him straighten out his operations. Just follow the road northeast and find him in the rocketway tower.