Light pillars is a condition that appears when light reflects off of ice crystals having nearly horizontal parallel flat surfaces. The phenomenon is known as a sun pillar if the light is coming from the Sun,which near the horizon. 

• Because they are reflected, the light beams that form pillars take on the hue of the incident light. A excellent example is how pillars turn white or bright yellow when the sun is higher in the sky. However, the resulting pillar is predominantly orange, gold, or crimson when it is close to the horizon.
• Unlike a light beam, a light pillar is not physically located above or below the light source. Its appearance as a vertical line is an optical illusion, resulting from the collective reflection off the ice crystals, but only those that are in the common vertical plane direct the light rays towards the observer.
• Ice crystals with roughly horizontal faces reflect light, creating light pillars, which can also be produced by artificial light sources like streetlights.

• A type of optical phenomenon known as a light pillar is created when ice crystals in the Earth’s atmosphere reflect sunlight or moonlight. The crystal beam phenomenon is another name for them.
• It is also known to generate inaccurate statements of UFOs. One such location is Niagara Falls, where the city’s numerous upward-facing spotlights combine with the mist from the Niagara Falls to generate noticeable light pillars. This phenomena occurs regularly during the winter months in Niagara Falls.
• It appears as a short column that rises vertically above or below the light source. When the Sun is low in the sky or below the horizon, the light pillar is clearly seen. The arc it often makes spans five to ten degrees beyond the solar disc. Also occasionally observed are light pillars emerging from the Moon.

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