A rare example of a petrified tree still in a standing position. Yellowstone National Park, USA.

A rare example of a petrified tree still in a standing position. Yellowstone National Park, USA.
A rare example of a petrified tree still in a standing position. Yellowstone National Park, USA.
2021
rare example petrified tree still standing position. Yellowstone National Park USA. caldera crater magma volcanic vulcanism geological np usa fossilized fossilised wood geology American position