Fall at Denali National Park and Preserve in Alaska

From U.S. Department of the Interior:

Fall at Denali National Park and Preserve in Alaska means gorgeous autumn colors and hungry brown bears. To get ready their long winter sleep, bears spend the summer and fall packing on the pounds -- gorging themselves on salmon, berries and grass. Sleeping snugly in their dens, breathing only once a minute and dropping their heart rate to 8-10 beats a minute, bears will live on their fat stores during the dark, cold winter. Photo by Jacob W. Frank, National Park Service. — at Denali National Park and Preserve.