Here are some pictures I took with Suzi (April 28, 2010) while hiking the Romero Ruins Trail just north of Tucson, AZ. It's a short panoramic walk through rattle snakes and history - see the captions.
We came within 3 to 4ft of stepping on this 3ft rattle snake
View from trail
What type lizard is this?
Portion of Hohokam Village outer wall, 500-1500 A.D.
One room of the Romero Ranch - 1850