Yellowstone - rickz
Colorful thermal features, Upper Geyser Basin, Yellowstone National Park

The Upper Geyser Basin has the highest concentration of geothermal features in the park.

Colorful thermal features, Upper Geyser Basin, Yellowstone National Park

The Upper Geyser Basin has the highest concentration of geothermal features in the park.

ColorfulthermalfeaturesUpper Geyser Basingeyser basinorangebacteriayellowsteamyellowstoneyellowstone national parknational parktreetreespoolwaterthermal featurecolor