Mysterious Spiral time-lapse

What causes the Northern Lights?

What causes the Northern Lights? Aurora borealis explained

In June, 2015 I photographed auroras for the second time. A few months earlier I captured the auroras for the first time at Crater Lake. My photos from that night went viral. So on this night, a bunch of photographers asked where I was planning on going. Most of them didn’t realize I had a day job that I had to be at in the morning. I wound up driving south to my local ski mountain and setup this timelapse for a few hours with my kids in tow as it was summertime. The auroras peaked at twilight t