Skier under the Aurora Borealis, by Reuben Krabbe
Adam Rifkin stashed this in Images!
Imgur comments: http://imgur.com/roGmLGq
I suspect this is a long exposure of the AB and as the skier comes into frame, the photographer pops the flash, freezing his motion.
According to Reddit both the skier Tobin Seagel and photographer braved -30C weather in their camp.