Time to feed a hungry youngster
The (almost) perfectionist
Long-tailed Duck / Clangula hyemalis
Glacier National Park, Montana, US
Gentoo Penguin - Near Threatened
A fancy fungus
Grand Prismatic Spring, Yellowstone National Park
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The reward of a long, uphill hike
Patterns in a puddle
I promised colour and warmth : )
Devil's Slide, Montana
Freedom to roam
Eye-catching red
Hot spring colour, Black Pool, Yellowstone Nationa…
Lest We Forget
Dwarf Fleeceflower / Persicaria affinis ‘Dimity’
Long-tailed Duck females / Clangula hyemalis
The power of wishful thinking
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Yellowstone National Park
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Flowing into Yellowstone Lake
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A sign of what's to come
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Red Rock Canyon, Waterton Lakes National Park
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183 visits
Looking in awe
How we (friends from England, Linda and Tony, and myself) enjoyed ourselves at this wonderful hot springs location in Yellowstone National Park on 13 September 2012! The colours and patterns were spectacular.
'"The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin.
Grand Prismatic Spring was noted by geologists working in the Hayden Geological Survey of 1871, and named by them for its striking coloration. Its colors include blue, green, yellow, orange, red and brown, and recall the rainbow disperson of white light by an optical prism.
The vivid colors in the spring are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water. The bacteria produce colors ranging from green to red; the amount of color in the microbial mats depends on the ratio of chlorophyll to carotenoids and on the temperature of the water which favors one bacterium over another. In the summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green. The center of the pool is sterile due to extreme heat.... The spring is approximately 250 by 300 feet (80 by 90 m) in size and is 160 feet (50 m) deep. The spring discharges an estimated 560 US gallons (2,100 L) of 160 °F (70 °C) water per minute." From Wikipedia.
en.wikipedia.org/wiki/Grand_Prismatic_Spring
'"The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin.
Grand Prismatic Spring was noted by geologists working in the Hayden Geological Survey of 1871, and named by them for its striking coloration. Its colors include blue, green, yellow, orange, red and brown, and recall the rainbow disperson of white light by an optical prism.
The vivid colors in the spring are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water. The bacteria produce colors ranging from green to red; the amount of color in the microbial mats depends on the ratio of chlorophyll to carotenoids and on the temperature of the water which favors one bacterium over another. In the summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green. The center of the pool is sterile due to extreme heat.... The spring is approximately 250 by 300 feet (80 by 90 m) in size and is 160 feet (50 m) deep. The spring discharges an estimated 560 US gallons (2,100 L) of 160 °F (70 °C) water per minute." From Wikipedia.
en.wikipedia.org/wiki/Grand_Prismatic_Spring
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