When wintertime hits rugged Rocky Mountain National Park in Colorado, roads close and fair-weather hikers and campers go home.
원문출처 : http://www.cnn.com/2016/07/20/travel/rocky-mountain-national-park-skiers-nps100/index.html
원문출처 : http://www.cnn.com/2016/07/20/travel/rocky-mountain-national-park-skiers-nps100/index.html