Twitter 上的 Radek Kucharski:"Have you ever seen a mammatus cloud? We had it above Warsaw a few days ago and that reminded me of a photograph I shot in #Kathmandu in 2016.
Beauty Of Planet Earth - Mammatus clouds, with some of the best colours. Shot in Texas, USA a few years back. Mammatus, meaning "mammary cloud", is a cellular pattern of pouches hanging
Mammut clouds… Thunder in the distance – Irie Smial Preserve
Mammatus - Wikipedia
boobclouds - Twitter Search / Twitter
Mammatus clouds: Your pictures - Chronicle Live
STRANGE STORM CLOUDS - Mammatus facts and information - YouTube
File:Mammatus clouds regina sk june 2012.JPG - Wikimedia Commons
Incredible ! Mammatus clouds appears in the sky of Berlin, Germany - YouTube