During a time exposure (about 10 minutes), I "painted" these sandstone formations with multiple flashes from a 600 w/s battery-powered studio strobe (with a large parabolic reflector) and a powerful, hand-held spotlight (1-million candle power). My wife, Linda, opened and closed the shutter while I ran around in the dark, painting and tripping over rocks :)
Double Arch is a close-set pair of natural arches. The larger opening has a span of 148 feet (45.1 meters) and a height of 104 feet (31.7 meters).
See the awe-inspiring NightScape VIDEO – with one Milky Way after another!