Stretching 70 miles through Arizona’s rugged past, Williamson Valley Road traces Native trails, stagecoach routes, and ...

The Morenci Mine is the largest copper mine in the US and one of the biggest in the world. As of 2007, operations ran around ...

A UNESCO Global Geopark uses its geological heritage, in connection with all other aspects of the area’s natural and cultural heritage, to enhance awareness and understanding of key issues facing ...