Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Road tunnel in Switzerland
The Giswil Tunnel is a tunnel in central Switzerland. The tunnel bypasses the town of Giswil in the canton of Obwalden, and forms part of the A8 motorway. The tunnel was completed in 2004, and is 2,066 metres (6,778 ft) long.