Bisses are the historic irrigation channels of the Valais. A bisse is an open ditches delivering priceless water from mountain streams – often by daring routes – to arid pastures and fields, vineyards and orchards. Many bisses are still in use today and so are carefully maintained. Numerous trails accompany these historic watercourses, inviting visitors to varied hikes on historic trails.
The Ergisch water channel and the Riederu
Forced labour was used to hew the channel bed out of the rock under extremely difficult conditions, and to add pipes and wooden gullies where necessary. The channel’s audacious construction makes it very popular with hikers. Water from the Turtmänna feeds the channel at 1300 m. The Riederu leads from Tuminu above Turtmann to Tennen.
Destination: Gampel-Steg (632m)
Distance: 11,5 km
Vertical metres: +220m, -670m
Hiking time: 3h30
Restaurants and pubs: Ergisch, Gampel-Steg