Casey Nocket is a self proclaimed Instagram artist that takes to National Parks to display her works. Nokcet's work isn't as terrible as graffiti; the only unfortunate thing is that she paints her work with acrylic paints on various rocks in National Parks.
According to her Instagram feed, Nocket has been traveling quite extensively – she has photos tagged from all over the West, including stops in Carrizo Plain National Monument, Sequoia, Bryce, Zion, Grand Staircase-Escalante, Grand Canyon, Canyonlands, Rocky Mountain and Joshua Tree National Parks.
I'm all for art, even installation art in various places. I even have loved some installation art that wasn't technically allowed to exist. The problem I have with the art is that it is (relatively) permanent and can't be easily moved. If she wanted to leave a painting on canvas in the parks, whatever. If she wanted to write in chalk on the rocks, I wouldn't like it but it's not the end of the world. But acrylic paint? That's just disrespectful.