Yellowstone National Park orange bacteria hot springs geyser water Old Faithfull Norris Lower Basin

Location: Yellowstone National Park. Wyoming. US.

This picture was taken in the Old Faithful Geyser area. The ribbons of color like you see here are formed by bacteria and other thermophiles (heat loving microorganisms).

There are many miles of boardwalks all over the different basins and geothermic areas in Yellowstone. These boardwalks provide safe access to the many thermal features and protect delicate features from the trampling feet of the thousands of tourists that visit the area each year.

Yellowstone's geothermal features are very beautiful, but also deadly. Their scalding temperatures can reach up to 120 ÂșC (250 F). Each year rangers rescue at least one or two people, mostly children, who have accidentally slipped from the boardwalks and broken through the thin earthen crust into scalding water. Most have survived but some haven't. Twenty people have reportedly lost their lives in Yellowstone National Park...

Here you can see other cool photographs of Yellowstone