Here's some pics from a recent day hike in Saguaro NP east of Tucson AZ (take the Houghton Road exit off I-10). It can be backpacked but need to follow the Park Service times. A little too hot this time of year.
The creosote was in bloom and pretty fragrant 
The namesake sagauro cacti
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More with a unique rock formation .. 
Blooming Christmas Tree cactus …
