Dizzy Dina wants you to kill 10 Ridgespine Stalkers. After you have done so, return to her at Toshley's Station in the Blade's Edge Mountains.
We hired on to help Toshley when he decided to move to Outland, and we've been on the move ever since.
Now it looks like we've finally put down some roots. All of the crazy scientists have their projects going, and us Roughriders are here to protect them.
What we need right now is for you to go north into Razor Ridge, or east to the Scalewing Shelf, and keep them clear by killing the stalkers. They're stealthy spiders that live amongst the rock outcroppings, and jump unsuspecting passersby.