Tags: Mountain Pass.
Unterer Hauenstein Pass (el. 691 m.) 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.
