West Thumb Geyser Basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell2241.html Thermal pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1506.html Mineral pool known as Paint Pot, used by First Nations for coloring. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33943.html Pools, West Thumb geyser basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell0521.html Ochre mineral pool called Paint Pot, used as a source of color by the First Nations. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33939.html Green pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1504.html Hot springs and snow, Upper Geyser Basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49267.html Trees and branches, mineral pool stained yellow by iron oxide. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33942.html Turquoise pool in Bumpass Hell thermal area. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1516.html Steam rising from pool in winter, West Thumb. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49244.html Refexions in the yellow waters of the Paint Pots. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33941.html Mustard Spring. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49327.html Two of the Paint Pots with mineral-colored water. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33944.html Crested Pool in winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49253.html One of the ochre-colored Paint Pots, a warm mineral spring. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33938.html Morning Glory Pool, winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49282.html Paint Pot and fallen trunk. Kootenay National Park, Canadian Rockies, British Columbia, Canada http://www.terragalleria.com/north-america/canada/kootenay/picture.cabc33940.html Morning Glory Pool with hikers. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell8795.html Chromatic Spring in winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49266.html Frosted tree and thermal pool. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49325.html Thermal pool in winter, West Thumb Geyser Basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49243.html Sapphire Pool in winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49324.html Hiker at Morning Glory Pool, winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49283.html West Thumb Geyser Basin in winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49250.html Morning Glory Pool, midday. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell8794.html Raibow colored Morning Glory Pool. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell21275.html Thermal pool and dark clouds, winter. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell49245.html Beauty Pool. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell21273.html Bright colors of morning Glory Pool. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell8796.html Sapphire Pool, afternoon. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell21271.html Travertine formations in Upper geyser basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell0510.html Steam out of Beauty pool in Upper geyser basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell0507.html Blue clear waters in Sapphire Pool. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell21272.html Chromatic Pool in Upper Geyser Basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell2245.html Thermal pool, upper Geyser Basin. Yellowstone National Park, Wyoming, USA. http://www.terragalleria.com/parks/np-image.yell21274.html