Aspen trees in autumn below Longs Peak, a mountain above 14000 feet, known as a 14er, Rocky Mountain National Park, Colorado, United States of America, North America

color image photography outdoors no people nobody day scenic scenery peak peaks mountain aspen aspen trees trees fall blue sky travel travel destinations horizontal scenics nature beauty in nature mountains seasons tree aspen tree autumn longs peak usa rocky mountain national park colorado united states of america north america