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| Geysers and thermal hot springs |
| Blue Star pool |
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| Boiling water in a thermal pool, fueled by volcanic activity underground |
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| Fountain Paint Pot Area |
| a constant bursting of steam and boiling water |
| the paint pots bubble with clay instead of water |
| most pools are over one hundred and fifty degrees and are crystal clear |
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| Geyser Basin Area |
| bacteria growing in the thermal pools |
| Geyser Basin overlooks the Yellowstone Lake |
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| Mud Volcano Area |
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| Dragon Caldron |
| All images are protected by copyright - (c) Tiell. |