Laschet Tunnel Cutting

The southern head of the tunnel was blown up on August 3, 1914 by the Belgian army to prevent the passage of the Germans with their material. This was done to protect the fortresses near Liège, but the last fortresses fell on August 16, 1914. On May 10, 1940, the Belgian army mined the tunnel again and large parts of it fell. In 1941, the Germans replaced the tunnel with an open trench with a bridge, which lasted until 1952.

This is the so-called Laschet Tunnel, through which the fabulous RAVEL Ligne 39 runs today.

On August 3, 1914, the southern entrance to the Laschet Tunnel was detonated. This was done to prevent the Germans from bringing the cannon "Dicke Bertha" as far as Liège. It took until August 17 before the tunnel was cleared again by the Germans.
On May 10, 1940, the Belgian Army collapsed almost the entire tunnel. In 1941 the Germans cleared the tunnel and replaced it with a tunnel trough.
(Traces Of War)