If you know where to look, there are many panels of petroglyphs and other rock art located in the canyons and side-canyons of the desert southwest. Many are pristine and untouched but there are, unfortunately, too many that hand of idiots have defaced with their own graffiti or even bullet holes. It's the primary reason those who know where they can be found are reluctant to tell those who don't unless they are close family or friends in whom they have full trust not to mar these 700+ year old relics. It is so discouraging to see an outline of someone's hand from 1100 or the drawing of a animal right next to the "Joanie loves Chachi" some ignorant fool added in 1973.