Tremors

Valentine "Val" McKee and Earl Bassett are handymen working in Perfection, Nevada, an isolated settlement in the high desert east of the Sierra Nevada mountains. They eventually get tired of their jobs and leave for Bixby, the nearest town. As they leave, they discover the dead body of Edgar Deems, a fellow resident, perched atop an electrical tower, still grasping the tower's crossbeams and his rifle. Jim Wallace, the town's doctor, determines that Edgar died of dehydration, apparently having been too afraid to climb down.