The Empire Valley is just 25 minutes from Tucson, a city at the eastern edge of the Sonoran Desert, widely known for its iconic Saguaros. But the Empire Valley is entirely different, from a different time and place: grasslands as far as the eye can see. It has been like this, in this valley, as close to the desert as two standing subway commuters, for tens of thousands of years.
Two, sometimes three times each year, it snows in the Sonoran Desert. As it does everywhere, snow changes everything.
The great emptiness of southern Arizona is a playgjround for landscape photography.
San Pedro River
The only river in the West to escape being dammed or diverted, the San Pedro flows from the Mexican border, north to its confluence with the Gila River.