It's called Crack in the Ground, a volcanic fissure 70 feet deep and 2 miles long that splits a landscape of sagebrush and juniper about 7 miles north of Christmas Valley. As the name suggests ...

Most slabs-on-ground are unreinforced or nominally reinforced for crack-width control. When positioned in the upper or top portion of the slab thickness, steel reinforcement limits the widths of ...