This quest is actually somewhat complex and can be pretty tough, depending on how early in you try it. After you enter the Pockmark Flats and fight your way to the big crater you'll find that there are many more Stone Elementals, Hulking Stone Elementals and Boulder Elementals around than usual. They are patrolling the whole crater, some of them at rather high speed. The Boulder Elementals are Level 7 and can cause serious problems to weak characters.