While exploring the shores around St. Joseph, Michigan last week, photographer Joshua Nowicki stumbled onto a bizarre phenomenon: dozens of small sand towers rising out of the beach, some over a foot tall. The strange layered sand castles are formed when blasts of wind slowly erode layers of frozen sand, much like how a river might slowly create a canyon. Nowicki returned yesterday to shoot more photos, but found that sunny skies were enough to melt them away. You can see more of his photography here.