The Simmental is an alpine valley in the Bernese Oberland of Switzerland. It expands from Lenk to Boltigen, in a more or less south-north direction, and from there to the valley exit at Wimmis near Spiez it takes a west-east orientation. It comprises the municipalities of Lenk, St. Stephan, Zweisimmen, Boltigen, Oberwil, Därstetten, Erlenbach, Diemtigen an…The Simmental is an alpine valley in the Bernese Oberland of Switzerland. It expands from Lenk to Boltigen, in a more or less south-north direction, and from there to the valley exit at Wimmis near Spiez it takes a west-east orientation. It comprises the municipalities of Lenk, St. Stephan, Zweisimmen, Boltigen, Oberwil, Därstetten, Erlenbach, Diemtigen and Wimmis. The Simme flows through the valley.