The sandstone formations in Arches preserve time. Each sandstone layer represents a different period in Earth’s history. The layers in this photo are all from the Jurassic age, ranging from 144-208 million years ago. Before they solidified into stone, these layers were unique environments ranging from vast sand dune deserts to tidal flats and coastal dunes. #FindYourPark #EncuentraTuParque 📸NPS