yellowstone national park, eruption of old faithful geyser at the upper geyser basin on beautiful spring day, wyoming, usa

active america american and basin beautiful blue deposits destination eruption faithful forest fountain geothermal geyser geyserite heritage hill hot impressive landscape mountains national natural nature north of old outdoor outdoors park plain plateau rocky site sky spot springs states steam supervolcano tectonic tourist travel travertine unesco united upper usa volcanic volcanism volcano water west western wild wilderness world wyoming yellowstone