The fourth stage starts in Welschenrohr in the Canton of Solothurn and takes you through a peaceful yet varied landscape. In Balsthal, castles and ruins watch over the entrances to the valleys, before you cross the Obere Hauenstein halfway round. The part of the Jura mountains known as the Kettenjura gives way to its counterpart, the Tafeljura, after you enter the Canton of Basel Landschaft. Your ultimate destination is its capital, Liestal.