Arizona landforms took shape over millions of years, creating a series of spectacular gorges, canyons, mountains and http://valleyspic.twitter.com/so4aDnfPpv

Arizona landforms took shape over millions of years, creating a series of spectacular gorges, canyons, mountains and valleys http://pic.twitter.com/so4aDnfPpv

https://twitter.com/NatGeoTravel/status/926962274576695296