Stockholm Sun Pillar
Pictured by Peter Ros�n at sunrise 29th November.
©Peter Ros�n, shown with permission.

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Sunlight reflected both externally and internally from the large hexagonal faces of plate crystals produce these illusions of light beaming upwards (and sometimes downwards) from the sun.

Other ice halos need well aligned crystals. Pillars need wobbly crystals, the greater the wobble the taller the pillar.