Comment Desert (Score 1) 246
No question, particularly in Arizona. The lack of rain makes it "older" on the surface, less erosion. I would love to build a giant metal detector and go searching for meteoroids and the like. I lived in Phoenix and miss roaming around the govt. land, which is plentiful, so there isn't anyone to ask permission. Just do the roaming in the winter, which is very mild, bring lots of water and curiosity. The mountains are climbable and everything is fairly accessible. You can bet most every day will be sunny and clear.