Hikers on Arizona trails use cairns to mark the way and also to express themselves. But critics say moving rocks alters the landscape, causing erosion and evicting insects from their homes. They say it can also confuse hikers.
Tonto National Forest has received additional funding to continue thinning projects in communities around the Payson area. The agency received $1.9 million to thin and pile overgrown and unhealthy Ponderosa pile stands.