Rocky Mountains: Petrified tree trunk, Yellowstone Petrified Forest, Specimen Ridge, Yellowstone National Park, Wyoming, USA. About 55 million years ago these trees were buried by volcanic ashes and mudflows.
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Image below: Marcel Huijser points out the growth rings.
Marcel Huijser points out the growth rings in a petrified tree trunk, Yellowstone Petrified Forest, Specimen Ridge, Yellowstone National Park, Wyoming, USAMarcel Huijser points out the growth rings in a petrified tree trunk, Yellowstone Petrified Forest, Specimen Ridge, Yellowstone National Park, Wyoming, USA. About 55 million years ago these trees were buried by volcanic ashes and mudflows.
Image below: Growth rings of petrified tree.
Growth rings in a petrified tree trunk, Yellowstone Petrified Forest, Specimen Ridge, Yellowstone National Park, Wyoming, USAGrowth rings in a petrified tree trunk, Yellowstone Petrified Forest, Specimen Ridge, Yellowstone National Park, Wyoming, USA. About 55 million years ago these trees were buried by volcanic ashes and mudflows.