|Elevation||569 m (1,867 ft)|
Two tunnels have been dug under the pass, one for the Federal Railway and one for the A-3 Autobahn.
During the Middle Ages, there were three different roads over the pass, all of which started from Effingen. The northern one followed the route of the Roman road to the ferries at Lauffohr and Stilli, the middle one through Unterbözberg to Brugg, and the southern one through Gallenkirch and Linn to the ferry at Birrenlauf (Schinznach-Bad).
The middle route won out, even though it was swampy and steep (with grades up to 20 percent) and too small for large coaches. Commercial traffic took a detour until the city of Bern built a better road between 1773 and 1779.
The railroad line was opened in 1875. With the advent of the automobile, the pass developed heavy traffic. In 1995, the year before the completion of the tunnel, 12,500 vehicles crossed the pass per day. Today, only about 3500 vehicles cross the pass each day.
- This article incorporates information from the German Wikipedia.
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