The Rennsteig Tunnel is part of the motorway Autobahn A 71 between Gräfenroda and Oberhof in Thuringia.
The tunnel was built between 26 June 1998 and 5 July 2003, when it was opened by German chancellor Gerhard Schröder.
It was part of the traffic project German unity ("Verkehrsprojekt Deutsche Einheit") and cost 210 million euros.
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