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| In the Upper Geyser Basin at Yellowstone National Park, Castle Geyser may be the oldest of all the geysers. "Yellowstone Treasures" by Janet Chapple says the lower shelf of the geyser's cone dates from about AD 1100. |
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| Photographer: Lynn Wood | Camera: Canon EOS 20D | Date: 6/21/06 8:29 PM | Resolution: 533 x 800 | ISO: 400 | Exp. Mode: Program normal | Exp. Time: 1/319s | Aperture: 13.0 | Focal Length: 64.0mm (=102mm) | Flash: No | Author: Lynn Wood | Copyright: Lynn Wood | Caption: Castle Geyser in the Upper Geyser Basin of Yellowstone National Park |
| Total images: 23 | Generated by JAlbum 7.2 & Chameleon | Help |