By Jeanette Arnquist
The first thing you have to understand is that crossing the desert between the Mexican border and Tucson is very dangerous. There is NO water. None. Well, there are some cattle tanks that amount to e-coli soup with a side of salmonella, but even these are far apart.
The terrain is brutal. It is rocky and steep. Some places there are trails, others just tracks and others just bush whacking. In Arizona, most of the vegetation is full of spines or thorns. There are rattlesnakes and scorpions. And it can be very hot. And it can be very cold as well.