These clouds can grow up to 15km (10 miles) high, and usually cause localised heavy rain and thunder.

Seen near Enschede, The Netherlands, looking north, a few summers ago. Photo by me. No bombs or conspiracies were used in the creation of this photo.
Impressive!! I never saw one so "perfect" like these one! Thanks :)
You're welcome. It was the first time I saw one as archetypical as this one as well, so I hit the brakes and got out of the car 8-).
Sometimes we must do it, stop the car and photograph!! :)
Excellent work! Congratulations!
Thank you.
wooow amazing, very cool, good jobs my friend ;)
Thanks!
it's my pleasure =)
Great capture and glad it WAS just a cloud!!
According to the meteorologist who borrowed my photo, the cloud was about 50 miles away from me!