This is what went down in Gullfoss, Iceland, on the night of the 24th of February, 2014.
Gullfoss is the most famous waterfall in all of Europe.
It was the most intense photoshoot I've ever participated in; gale force winds off the back of a hurricane were racing through the gorge, and, I was down on my hands and knees as I held the tripod down to stop it from being blown away.
My fingers and hands numb from the cold, I watched as the green and purple pulses shimmered in their holographic dance across the heavens.
This is one frame from several dozen that I shot that night.
An absolutely incredible experience, which will take a lot to top!
Canon EOS-6D, Canon EF 17-40mm f/4L USM 8s f/4.0 at 20.0mm iso5000