Thor: Son of Asgard (2004) #4

"THE WARRIORS TEEN" PART 4 (OF 6) As Thor, Sif and Balder continue their quest, emotions run high between the troubled teens, and the cracks in their friendship continue to widen. Now, they must make their way across the desert plains of Jennia, in search of one of the land's magic jewels, but little do they know what terrors await them beneath the shifting sands...