This week, the Grand Canyon celebrated 99 years as a national park. Have you ever been? We'd love to see your photos. #yourshot http://on.natgeo.com/2BW6qL1 pic.twitter.com/7dSePbqMe5

This week, the Grand Canyon celebrated 99 years as a national park. Have you ever been? We'd love to see your photos. #yourshot http://on.natgeo.com/2BW6qL1  pic.twitter.com/7dSePbqMe5

https://twitter.com/NatGeoTravel/status/968568970830909441