This undated photo supplied by the U.S. Fish and Wildlife Service shows fall color at a lake in Rocky Mountain Arsenal Wildlife Refuge in Commerce City, Colo. The park, which opens a do

 

              This undated photo supplied by the U.S. Fish and Wildlife Service shows fall color at a lake in Rocky Mountain Arsenal Wildlife Refuge in Commerce City, Colo. The park, which opens a do
This undated photo supplied by the U.S. Fish and Wildlife Service shows fall color at a lake in Rocky Mountain Arsenal Wildlife Refuge in Commerce City, Colo. The park, which opens a do-it-yourself nine-mile Wildlife Drive Oct. 13, is located just outside of Denver. (AP Photo/Rick Keen/DPRA)