sapphire pool in biscuit basin with blue steamy water and beautiful colorful sunset. yellowstone, wyoming

active america basin beautiful biscuit black blue colorful diamond dusk eruption famous geothermal geyser heat hiking hot iconic landscape meadow mountain national nature orange outdoor park pool sapphire saturated scenic sightseeing sky spout spring steam steamy summer sunset thermal tourist travel usa vacation vivid volcanic volcano water wilderness wonderful wyoming yellowstone