They saved Hitler's planes

Odd story of the day: Fully armed Nazi bomber planes 'buried below East Berlin airport'.

By the way, buried deep in the story is the revelation that there have been some searches conducted under the airport with nothing found. That said, there's some interesting background on how "bunker happy" the Nazis in Berlin were. "...for every one metre of building above ground in modern-day Berlin, there are three metres below ground..."