This popular sandy beach is seen in the fall season with the foliage in color. Yellow leaves come from birch trees (Betula sp.), red leaves from maples (Acer sp.) and the green are spruce (Picea sp.) and fir (Abies sp.) trees. This is a youthful forest that burned in 1947. The beach is composed of cold-water carbonate sands comprised of barnacles (Balanus sp.), blue mussels (Mytilus edulis) and echinoderm (Strongylocentrotus droebachiensis) spines. The mountain in the background is composed of Silurian granite. (Photograph taken October 2008, and caption by Joseph T. Kelley, Department of Earth Sciences, University of Maine, U.S.A.)