Sun pillar
Here is a photo of a stunning a sun-pillar reflecting light from the Sun setting over Ontario, Canada.
Sun Pillars occur typically during sunrise or sunset when sunlight is reflected off the surface of falling ice crystals associated with thin high-level clouds, like Cirrostratus clouds.
The crystals are hexagonal, plate-like crystals and as they fall they are forced into a horizontal orientation due to resistance from air.
The result is the reflection of this beautiful pillar of light.
-Jean
Image courtesy of Rick Stankiewicz
(from The Earth Story FB page)