The St. Gotthard Tunnel in Switzerland runs from Göschenen in the Canton of Uri at its northern portal, to Airolo in Ticino to the south, and is 16.942 kilometres (10.527 mi) in length below the St. Gotthard Pass. It is the third-longest road tunnel in the world after Norway's Lærdal Tunnel (24.5 km), and China's Zhongnanshan Tunnel (18 km).
In response to the automobile boom in Switzerland and the popularity of Italy as a travel resort, the Swiss government gave approval in July 1969 for the construction of the 16-kilometre Gotthard Road tunnel. The tunnel would be longer than any existing road tunnel, and would provide year-round road link between central Switzerland and Milan to be used in place of the Gotthard Pass.
The now widely used motorway tunnel was opened on September 5, 1980. It remains a single bore tunnel with just one lane operating in each direction. It has four large ventilation shafts and an additional side gallery between 10 and 18 metres from the main tunnel, having its own independent ventilation system in order to facilitate the cutting of a second tunnel, should future traffic levels require it.
The stamp on this maxicard was issued to commemorate the opening of this Tunnel on 5.9.1980. Thank you Maria.