Video: Blackriders x Blanka

"For the past seven years, Prague has been building a bypass. However, unlike most city bypasses, it does not go around the city but goes underneath it.
The ‘Tunel Blanka’ as it has been named is a 6.4km motorway tunnel under the whole city and the River Vltava which runs through it. This makes it the longest road in Prague and the longest city tunnel in Europe. And did I forget to mention, it’s all downhill...
Even though construction of the tunnel has been going on since 2007 the tunnel is still not open to the public. However, one group of people have found another use for the bypass while it is still closed..."