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In the background, steam rises through the trees at Artists Paintpots, a geothermal area, in Yellowstone National Park, while a unique tree stump is in focus in the foreground.
Thermophilic Microbial Mat at Sapphire Pool in Biscuit Basin of Yellowstone National Park, Wyoming
Hot springs are the most common hydro-thermal features at Yellowstone National Park.  They vary from frothing mocha-like boiling water to clear and calm pools of tremendous depth.
Montana - Western USA, Sky, Caldera, Cloud - Sky, Dramatic Sky
Moss growing in the forest during winter at Pinetop-Lakeside Arizona.
West Thumb Geyser Basin in Yellowstone National Park
Summer scenery at Theodore Roosevelt National Park, North Dakota, USA
Vibrant colors around a hot spring in Yellowstone National Park from thermophilic bacteria growing along the springs edge.
View of a bridge crossing the Firehole River at Upper Geyser Basin, Old Faithful, Yellowstone
Thermophilic Microbial Mat at Sapphire Pool in Biscuit Basin of Yellowstone National Park, Wyoming
Aerial view of canyons in Monument Valley, Arizona, USA.
Landscape of geyser basin with smoke and background of pine forest inside hot zone of Yellowstone National Park, Wyoming, USA.
A colorful hot-spring in Yellowstone National Park.  See more
A close up of yellow lichen growing on coastal rocks on the Wales Coast Path in Anglesey, Wales, UK. Some small growth of beard moss lichen (usnea) is also visible.
Geothermal Hot Springs at Mammoth Hot Springs, Yellowstone National Park, USA
Majestic Yellowstone lake
The World Famous Grand Prismatic Spring in Yellowstone National Park,USA
Boardwalk at Norris Geyser Basin in Yellowstone National Park, Wyoming
Norris Geyser Basin, Yellowstone, Wyoming - United States of America
Muddy country road in the middle of the forest covered with snow seen during the cold winter day and captured with drone directly from above.
Old man's beard on a tree branch at Swan Lake, Victoria, BC Canada
Vegetation in the valley approaching Briksdal Glacier in Norway.
Field of dried yellow thistle and late summer wild grass is dotted with the bones of old dead trees
Wonderful Blue Lake and Yellowstone, Wyoming, USA,Nikon D3x
Close up of a green moss
Driftwood and rocks at the Island View Beach on Vancouver Island, British Columbia
Geyser and hot spring in old faithful basin in Yellowstone National Park in Wyoming
Unique geothermal features where hot springs deposit iron-rich minerals, creating reddish-brown formations resembling molten chocolate. These iron-oxide deposits are formed as the hot, mineral-laden water flows out and cools, precipitating the iron and other minerals. They were first documented by members of the Hayden Geological Survey of 1871, led by geologist Ferdinand V. Hayden.
Midway Geyser Basin in Yellowstone National Park.
Free Images: "bestof:yellowstone yellowstone national park yellowstonenationalpark outdoor texture Moss with sporophytes and lichen growing in an old tree log; Diane Renkin; May"
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