The cache is not at--but IS very close to--the posted
coordinates. There is no puzzle to solve, but you'll need to
use your geo-senses to spot this one.
Most vehicles should be able to get to within a few hundred feet
of the cache. From there it's a short, moderate walk to the cache
site.
Once you get to the posted coordinates, you'll know where you
need to go to find the cache. (Yes, THERE.) GPS reception is,
needless to say, terrible at the cache location. You have several
choices.
The cache is a 30-cal ammo can concealed (not surprisingly)
under a pile of rocks. Due to the popularity of the location,
PLEASE be sure to re-hide the cache as well as (or better than) you
found it. Let's see how long we can make this cache last.
Standard desert caching rules apply. Watch out for snakes,
scorpions, and other critters. And in this case, beware of falling
rocks.
Good luck, and happy caching! 
