Candle ice is a form of rotten ice that develops in columns perpendicular to the surface of a lake or other body of water. This occurs due to the hexagonal structure of the ice crystals.

[📹 Marie Beltrao]

https://video.nostr.build/784e91a536866cfc8cf34d09c02f5e55a8495ec833c63b3e3bdd0de972918c55.mp4 

 Brrrr… 🥶 

 Very cool. 

That explanation is from wiki and frankly is awful. 

Heres a cooler page and another video for anyone interested.

https://theawesomer.com/rowing-through-candle-ice/718525/