Unterer Hauenstein Pass is a mountain pass in the Jura Mountains between the canton of Basel-Country and Solothurn in Switzerland.
It connects Buckten in Basel-Country and Trimbach in Solothurn. The pass road has a maximum grade of 6 percent.
The pass was probably already used by the Romans. In 1993, Roman artifacts were discovered at the pass. It also lies close to the Roman settlement of Augusta Raurica.
Wikipedia https://en.wikipedia.org/wiki/Unterer_Hauenstein_Pass
Address 50 Hauptstrasse, Hauenstein-Ifenthal 4633, Switzerland
Coordinates 47°22'52.836" N 7°52'8.329" E
