An interactive map of every single bomb dropped on London by the German Luftwaffe during the Blitz of World War II.
During that period (the London Blitz), London was attacked 71 times. More than one million houses were destroyed or damaged, and more than 40,000 civilians were killed.
“Wenn man diese Karten und die Verbreitung der Bomben über der Hauptstadt betrachtet, wird klar, was das Wort Blitz bedeutet.”
Observing Hermann 
Oh, sorry, I thought it was the density graph of gas masks carried by windmill-advocats around Cologne!
http://www.eike-klima-energie.eu/news-cache/doha-ist-vorreiter-teilnehmer-tragen-gas-masken-zur-verminderung-ihres-co2-ausstosses/
That’s stunning.
Yeah, Joe. Hard to believe, isn’t it? It was spread over 71 attacks, but the intensity of it is just too much.