Sunlight Windom Peak Silverton summer morning glacier Twin Lakes Chicago Basin Colorado Silverton San Juan Range Rocky Mountains snowmelt Mount Eulos fourteeners July blue sky clouds pan up reveal

chicago basin twin lakes morning windom peak mount eulos sunlight peak blue sky san juan mountain range the catwalk colorado hiking spring rocky mountains silverton summer fourteener july mountaineering jupiter mountain north eolus rugged needle mountains southwestern colorado summit traverse weminuche wilderness san juan national forest durango la plata county needle creek trail purgatory rocky terrain wildflowers summiting spectacular vistas camping pristine wilderness backcountry narrow gauage railroad new york basin snowcaps elevation needleton continental divide cairns summit ridge scramble climbing exposure hike backpack