This photograph captures a snowy road, Puerto de Navacerrada, near Madrid, where falling ice crystals caused up to four lunar halos to appear around the moon. These are caused by the moonlight refracting through the ice crystals which populate high thin clouds in the air. Hexagonal, column, and distant ice crystals caused 22 degree, circumscribed, and 46 degree halos to form, respectively. A quadruple halo is very rare, especially for the moon.
