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An ancient, cross-bedded sand dune, Zion National Park

An ancient, lithified cross-bedded sand dune seen along the Zion-Mount Carmel Highway in Zion National Park, Utah
Rebecca Latson
Monday, April 22, 2019

The Zion-Mount Carmel Highway running through Zion National Park, Utah, guides park visitors past ancient cross-bedded sand dunes. Can you tell which way the wind blew to create these now-lithified sand layers?

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