This is from Sabino Canyon, just outside Tucson, AZ.
I think this was the Bear Canyon Trail.
I did a tour of the Southwest a few years back and
this was one of the first days where the skies were not
obscured by the smoke from all the fires in Mexico that
blew into the area. The visibility in Dallas was even affected
by the smoke.
Scanned in from an 8x10 print.