File:Grand Prismatic Spring (5 August 2013) 2.jpg
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| Description |
English: Grand Prismatic Spring, Excelsior Group, northern Midway Geyser Basin, Yellowstone Hotspot, northwestern Wyoming, USA in August 2013.
Grand Prismatic Spring is, by far, the most beautiful thing I’ve ever seen. This rainbow-colored hot spring is best appreciated from the boardwalk along the northeastern edge of the pool and from atop Midway Bluff, a hill on the eastern side of the highway next to the Firehole River and from “7622 Hill” on the southeastern side of Fairy Falls Trail/Fountain Freight Road. [7622 Hill is now off limits due to the death of a Taiwanese tourist on the hillside in 2014. An "official" trail leading up to a park-made viewing platform has since been constructed.] The deep blue color at the center of the pool is the result of very hot water having abundant, suspended, less than 0.5 micron-sized, colloidal silica particles. The yellow, orangish, reddish, and brownish areas are mats of extremophile bacteria (e.g., Phormidium, Synechococcus, Calothrix). The greenish areas are the effect of “blue water” mixing with the light reflecting from the yellowish bacterial mats. Grand Prismatic Spring is the largest hot spring in the world. It does not erupt as a geyser. |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/14299494619/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/14299494619. It was reviewed on 28 April 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 16:15, 28 April 2023 | | 4,288 × 2,848 (7.69 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/14299494619/ with UploadWizard |
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