CO colorado Estes Park mountain mountains Rockies rocky rocky mountain Rocky Mountains snow snowy alberta canada glacier ice jasper river sveres buildings Denver mile high city panorama skyline skyscrapers usa view british columbia clear confiers conifer evergreen lake reflect reflection rocks spring transparent water winter bridge cabin chalet serene tranquil tranquility bighorn bighorn sheep Camp camping climb hike hiking mountain sheep Mt. Evans sheep wild wildlife autumn clouds fall isa landscape nature trees austere bare bleak cold debris hard natural retreat rock scraped scratched scree stark stern worn