<
This was taken at Yellowstone National Park. It is the lower falls of the Yellowstone River.
This is also at Yellowstone National Park. It is known locally as the mud volcano.
This is a detail photo of the mineral formations at Minerva Terrace at Yellowstone National Park.
This is at Grand Teton National Park.
This is Mount Moran at Grand Teton National Park. The dark rock near the top of the peak is the remnant of intrusive igneous rock.
This is standard view of the "GrandTetons".