I had to go to dinner so to continue:  we are in the Sonoran Desert and today was the first of the Saguaro cacti. We had a guest speaker last night who shared much information about the land and geography of Arizona. Even though we are in the desert there is much agriculture. We passed 2 dairy farms today that they estimate the herd size as 10,000-15,000 cows. I have NEVER seen dairy farms so big. Another thing is the fact that we have these giant mountains around us but we are riding in a basin that is completely flat