Ice patterns, Ice crystals. 冰的圖案, 冰晶

Ice patterns in Hungary
Continuous sub-zero temperatures in the past days have created a unique ice pattern on a frozen glass window in Salgotarjan, 109 kilometers northeast of the capital Budapest, Hungary, Jan. 7, 2017. (Photo: PETER KOMKA/EPA)

Photos of the day - January 7, 2017

https://www.yahoo.com/news/photos-day-january-7-2017-slideshow-wp-230025364/photo-p-continuous-sub-zero-temperatures-photo-230025741.html

Ice crystals - Wikipedia

冰晶