To a person who expects every desert to be barren sand...

To a person who expects every desert to be barren sand dunes, the Sonoran must come as a surprise. Not only are there no dunes, there's no sand. At least not the sort of sand you find at the beach. The ground does have a sandy color to it, or gray, but your feet won't sink in. It's hard, as if it's been tamped. And pebbly. And glinting with -- what else -- mica.