This satellite image shows a long cloud formation, called a cavum, spanning part of southeastern France.
Seen from below, cavum can look like a large circle hole-punched in the clouds. https://go.nasa.gov/3QQf2Yn
#NASAEarth
Seen from below, cavum can look like a large circle hole-punched in the clouds. https://go.nasa.gov/3QQf2Yn
#NASAEarth
When Clouds Cave
When airplanes pass through clouds with supercooled water droplets, they can leave distinctive holes in their wake.go.nasa.gov