Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
Well, among the longest ones... The 8.2 km Perthus Tunnel on the Catalan/French border has cross-passages every 200 m.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Fri May 28th, 2010 at 04:55:50 PM EST
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