Black Pool facts for kids
Quick facts for kids Black Pool |
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Black Pool prior to
the 1991 thermophile die-off |
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| Location | West Thumb Geyser Basin, Yellowstone National Park, Teton County, Wyoming |
| Coordinates | 44°25′05″N 110°34′19″W / 44.4179953°N 110.5718734°W |
| Elevation | 7,756 feet (2,364 m) |
| Type | Hot Spring |
| Temperature | 72.9 °C (163.2 °F) |
West Thumb Geyser Basin
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Black Pool is a famous hot spring located in Yellowstone National Park in the United States. You can find it in the West Thumb Geyser Basin, which is a part of Yellowstone known for its amazing hot springs and geysers.
What is Black Pool?
Black Pool is a beautiful hot spring. It gets its name from how it used to look. Before 1991, the water was cool enough for tiny living things called cyanobacteria to grow. These bacteria were dark orange-brown. When they mixed with the blue water, the pool looked very dark green, almost black.
Why Did Black Pool Change Color?
Something interesting happened in 1991. The hot spring started to get much hotter. This change also affected a nearby hot spring called Abyss Pool.
The temperature in Black Pool rose so much that it became too hot for the cyanobacteria to live. When the bacteria died, the pool's color changed. It turned into a bright, beautiful teal blue.
On August 15, 1991, the pool even had boiling eruptions. The water would dome up to about 3 feet high! This caused a lot of hot water to spill out.
Black Pool Today
Today, Black Pool is still extremely hot. It remains one of Yellowstone's most stunning and intensely blue hot springs. Even though its color is now a vibrant blue, it still keeps its original name, "Black Pool." It's a great example of how nature can change and surprise us!
Images for kids
- Images of Black Pool
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Black Pool, 2006
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Black Pool, 2003
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Black Pool, 2013
