The Apache Trail through the Tonto National Forest has cliffs, saguaro and boulder-strewn hillsides lining the road. The yellow-green areas are lichen growing on the rock face
Fallen boulders on desert hillsides - The Apache Trail through the Tonto National Forest has cliffs, saguaro and boulder-strewn hillsides lining the road. The yellow-green areas are lichen growing on the rock face