The evening sun casts a long shadow of a basaltic knob at Pot Mountain. These early Pleistocene-age rocks are likely eroded volcanic necks that may have erupted into water. The vents are now eroded and partially concealed by shoreline gravel of the late Pleistocene Lake Bonneville, giving the mountain a teapot-like shape when viewed from a distance.

Sevier Desert, Millard County. Photo by Adam McKean.