アメリカ内務省のインスタグラム(usinterior) - 7月16日 09時15分

With moonrise shrouded by passing clouds and the sky glowing with purple sunset light above a rugged landscape of striped hills, Petrified Forest National Park in #Arizona looks like another world. However, instead of being a new planet, the Tepees area actually reveals some of the oldest rock layers in the park. The colorful sandstone was formed over 225 million years ago as sediment was deposited and compacted across an ancient floodplain. Buried, uplifted and then exposed, the layered rocks tell a vast story of life and time on Earth. And they look really cool, too. Photo @PetrifiedForestNPS by Stuart Holmes, #NationalPark Service. #PetrifiedForest #usinterior

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• PetrifiedForestNPS