Terraces of travertine, a limestone deposit, reflect bright white from the early morning sun on a clear blue, cobalt sky day at Mammoth Hot Springs in Yellowstone National Park in Wyoming.
A crystal clear aquamarine and emerald pool steams in the West Thumb Geyser Basin in Yellowstone National Park in Wyoming.
Golden terraces of travertine, a limestone, glow off the rising sun in Mammoth Hot Springs in Yellowstone National Park.
