トゥーン湖
In 1901, the Spiez to Frutigen line was opened, which was to become the first stage of the Lötschberg line, carrying heavy traffic across the Alps, and transforming the stretch of the Lake Thun line between Thun and Spiez. In 1913, the Lake Thun Railway company was taken over by the Bern-Lötschberg-Simplon Railway, which became today's BLS AG.