Answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Unterer Hauenstein 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.
Answer:
Natural Place