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12th Annual Smithsonian Magazine Photo Contest The American Experience
The Signal Hill Petroglyph sits under a starry sky outside of Tucson, AZ. Etched into this rock by the Hohokam people hundreds of years ago, it is accessible by a short hike through Saguaro National

The Signal Hill Petroglyph sits under a starry sky outside of Tucson, AZ. Etched into this rock by the Hohokam people hundreds of years ago, it is accessible by a short hike through Saguaro National Park.

Photo Detail
Date Taken: 01.2013
Date Uploaded: 09.2014
Photo Location:
Copyright: © Robert Cole