Graffiti plagues Joshua Tree, Pinnacles and numerous California state parks
Most of the graffiti in Joshua Tree National Park is created with acrylic paint, spray paint and stickers, but staff members have also observed chalk, charcoal and etched graffiti. A large amount of the graffiti has occurred near roads and campgrounds, and of the 601 graffiti incidents reported since 2017, 413 have been removed.
Graffiti in Joshua Tree is a widespread issue impacting park infrastructure as well as cultural and natural resources, Tegarden wrote.
Farther north in Pinnacles National Park, a famous cave defaced with red graffiti required an extensive cleanup in late 2021, closing the feature for weeks.
Volunteers power wash graffiti off of boulders at Pine Canyon near Mount Diablo.
Save Mount Diablo organized this volunteer effort to clean up graffiti in the wind caves at Pine Canyon.
Elaborate graffiti outside of Landers, Calif., within the Mojave Desert.
More defaced rocks in the Mojave Desert.
https://www.sfgate.com/california-parks/article/Graffiti-plagues-Joshua-Tree-Pinnacles-16771051.php?IPID=SFGate-HP-CP-Spotlight