| Petrified Tree | |||||||||||
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When volcanoes erupted in Yellowstone, trees were covered by lava and ash. Over the years, the trees turned to stone as water seeped into the wood and deposited minerals. | |||||||||||
| Also in trail: yell_200209 |
Text and images copyright Stephen Warren.
Some images copyright Piers Daniell, Tina Warren (Olson), Srinivasan Murari, Andy Park..