Rocks and cliffs are covered with graffiti near Sapphire Falls in Cucamonga Canyon in the Angeles National Forest near Rancho Cucamonga, California. In response to massive graffiti vandalism, the city of Rancho Cucamonga is denying access through non-national forest land, actively enforced with $250 fines. While hikers must now use difficult and dangerous routes on national forest land to reach the popular falls, teams of graffiti vandals continue to spray paint the area at will. An epidemic of vandalism against natural, archaeological and historical sites has led to the closure of the historic Barker Dam and the popular Rattlesnake Canyon hiking area of the Wonderland of Rocks in Joshua Tree National Park. Vandals have also spray painted and chopped up iconic giant saguaro cacti in Saguaro National Park. Officials report that some vandals brag about their destructive exploits on social media sites, further popularising vandalism in remote wilderness areas.
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