This video is of the 3150 meter (10,335 feet) Lefortovo tunnel in Russia. It is the longest in-city tunnel in Europe. The tunnel runs beneath a river and, apparently there are some spots where water leaks into the tunnel. (Not good!) When the temperature reaches well below freezing, the road freezes and the result is the video above, taken during a single day with the tunnel camera.The background music is Avalon, performed by Juliet.
Video – Russian Tunnel