Triangular junction at Olten with the rail lines to Aarau, through the Hauenstein tunnel to Basel, over the old Hauenstein line to Sissach and into Olten station, 2010. In the centre the Wisenberg, Jura mountain range

Triangular junction at Olten with the rail lines to Aarau, through the Hauenstein tunnel to Basel, over the old Hauenstein line to Sissach and into Olten station, 2010. In the centre the Wisenberg, Jura mountain range