Schwabachers Landing, Grand Teton National Park, WY
I have photographed this location many times, but this was the first time I experienced the rare purple sky. Frigidly cold temperatures the day after a light dusting of snow on the mountains created the perfect conditions for the pre-sunrise light to briefly cause the mountains to look purple.

Field Info: Phase One IQ-380 XF, Schneider LS 40-80mm f/4 lens @ 70mm, 30 sec @ f/8, ISO 50