One thing about desert hiking - you want to do your activity early before the day warms up. In typical low humidity situations, the evening and early morning temps are quite comfortable.

typical start time would be 4:30 AM, finishing by 9 or so. An alternative would be to drive to high country where you are in a different world. T.he Santa Catalinas rise to 9,000 feet, with many very nice trails available.

What is it they say about mad dogs and Englishmen??
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Geezer in Chief