A time-lapse sequence of 345 still images, shot every 10 seconds between approximately 6:40 and 7:40 AM.
The viewpoint is Lyons, Colorado, and the two snowy peaks on the horizon at center are [left to right] Mount Meeker [summit elevation 13,911 ft/4,240 m] and Long's Peak [summit elevation 14,259 ft/4,346 m].
The rising sun [behind the viewer] illuminates the sky around Mount Meeker and Long's Peak - the highest point in Rocky Mountain National Park.