Münden Tunnel a tunnel as well. The tunnel breakthrough was on October 6, 1988. On May 29, 1991 the tunnel was officially opened, along with the Hanover-Fulda part of the high-speed rail line. The cost of construction was about DM 200 million (€102 million). Münden Tunnel The Münden Tunnel () is a railway tunnel on the Hanover-Würzburg high-speed rail line in Germany. It is situated south of the town of Hann. Münden between Göttingen and Kassel. At a total length of 10,525 metres, it is the second longest tunnel in Germany after the Landrücken Tunnel. The tunnel was built between 1983 and
Channel Tunnel Channel Tunnel The Channel Tunnel (; also nicknamed the Chunnel) is a rail tunnel linking Folkestone, Kent, in the United Kingdom, with Coquelles, Pas-de-Calais, near Calais in northern France, beneath the English Channel at the Strait of Dover. It is the only fixed link between the island of Great Britain and the European mainland. At its lowest point, it is deep below the sea bed and below sea level. At , the tunnel has the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at and deeper at below sea