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| This is the Castle Geyser. It's on a very old spring, estimates are that it's been building for anywhere from 5,000 to 15,000 years. The castle-looking cone has built up drop by drop to 12 feet tall. |
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| A close up of sunshine highlighting the bubbling and "sloppy splashing" geyser along the boardwalk near Old Faithful. |
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| The steaming Upper Geyser Basin of Yellowstone |
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| A bison and me with a geyser between. The bison is shedding his heavy winter coat. |



























































