Photographer Víðir Björnsson managed to capture a very rare moonbow in the night sky above Western Iceland, reports BBC. A second moonbow was also present though not visible on the photograph.
“I was driving in heavy rain and so much wind and I just stopped the car because I could not believe what I was seeing,” said Víðir. “First I thought I was just seeing some reflection from the window of my car, but then me and my friend who was driving decided to stop and try to get a picture of it.”
— Víðir Björnsson (@vidirb) November 22, 2015
Lunar rainbows are formed when moonlight, rather than direct sunlight, is refracted by moisture in the atmosphere. Since moonlight is much fainter than sunlight moonbows are notoriously tough to spot and often look white to the naked eye.