Black Sand Basin
The Black Sand Basin is located on the Yellowstone National Park’s ring road only 1.5 km northwest of Old Faithful. It is an isolated hydrothermal area with large hot springs and some small geysers, which got its name from some occurrences of black obsidian sand. I would have called this area White Sand! The Opalescent Pool is located close to the car park. I love this sight of the blue spring in the middle of the dead lodgehole pines and the white ground. The water from the surrounding geysers and springs contains large amounts of silica, which was absorbed by the tree trunks over time and is now reminiscent of white socks, why they are also called white »bobby sock« trees. Where there is no longer any water flowing, the silica also provides the white soil. Everywhere in Yellowstone National Park you will find the white ground.
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