A green line of cottonwood trees marks the course of the San Pedro River. The mountains to the left (in the far distance) are the Dragoons; the range at right are the Tombstone Hills. 

Proximity to water changes everything here. Just a few yards from the river’s edge the trees give way to the bunch grasses and scrubby mesquite that stretch for miles. 

At San Pedro House, San Pedro Riparian National Conservation Area, Cochise County, Arizona.