The top of Champlain Mountain, Acadia National Park, has lots of great rock formations. And lots of Cairns. Cairns are stacks of stones to mark the trails. The Cairns are typically placed where they are especially visible including locations that will leave them silhouetted to hikers. I was trail running/photographing one evening and liked how the lines in the stones somewhat matched the lines in the clouds, so I made a few images.