Fallstreak hole/ hole punch cloud/ skypunch/ cloud canal/ cloud hole. 穿洞雲

A plane flies below a fallstreak hole, also known as a hole punch cloud, punch hole cloud, skypunch, cloud canal or cloud hole, in the sky above Glimmen, The Netherlands, Jan. 6, 2017. Such holes are formed when the water temperature in the clouds is below freezing but the water, in a supercooled state, has not frozen yet due to the lack of ice nucleation. (Photo: SIESE VEENSTRA/EPA)
Photos of the day - January 6, 2017
https://www.yahoo.com/news/photos-day-january-6-2017-slideshow-wp-212450168/photo-p-police-investigators-forensic-technicians-photo-212450488.html

Fallstreak hole - Wikipedia

「雨幡洞雲」，又叫穿洞雲。