Large cutting wheel of the tunnel boring machine that was used to build the motorway tunnel under the river Elbe. The wheel has a diameter of 14.2 meters and a weight of 380 tons. Now on the premises of the "Museum der Arbeit" (Museum of Work) in Hamburg.
T.R.U.D.E = "Tief Runter Unter Die Elbe" (Down Deep Under The Elbe)
Hamburg: Second largest city of Germany, situated in the north at the river Elbe, because of the seaport well known as a city of merchants. Because of the nearby sea, you will always have some fresh breeze while you are walking through the streets with nice private town-houses or while you are floating along aboard an “Alsterdampfer” on the river Alster.