Golden terraces of travertine, a limestone, glow off the rising sun in Mammoth Hot Springs in Yellowstone National Park.
Mammoth Hot SpringsNorth AmericaU.S.United StatesWyomingYellowstone National Parkboiling watercolorcolorful microorganismsearly morningfamily activitieshorizontalnational parknational treasurenatural wondersnaturerecreationsteamtourismtravertinetravertine rockvacationvacation spotwilderness2012DennisMook