The dangerous ash from Iceland's Eyjafjallajokull volcano brought European air traffic to a halt. For a while, the skies over the north of Europe were almost empty of airplanes. Then, the ash went away and the beautiful mayhem resumed. [Twitter]
It was dubbed a "once in a lifetime opportunity" by UKAirshowReview, and I've got to agree—these photos of 13 Tiger Moth planes flying over Gatwick airport, with commercial planes grounded below due to volcanic ash, are amazing.