A three-minute video in real time shows a cumulus cloud with a “cap” on top. And this “cap” is also a cloud of vertical development, called pileus, which can be translated from Latin as a small light cap.
Beautiful fast-moving clouds, with time-lapse video recording, cumulus clouds, the sun is very warm, the air is cold, the tops are shaped like “caps” similar to lenticular clouds. In the afternoon, March 31, 2018.