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.
Bisse du Milieu and Bisse Vieux
The Bisse du Milieu, which carries water in summer, passes through the centre of the resort of Haute-Nendaz and irrigates the Bleusy area and its raspberry and strawberry fields. It crosses a spruce forest which was partially destroyed by Hurricane Viviane in 1990. The Bisse Vieux threads its way beneath the shade of gray alders, plunges into a dark spruce forest, crosses a rocky ridge where it drops 5 meters and irrigates meadows fragrant with wild thyme and oregano.
Destination: Le Lavanthier
Distance: 12,5 km
Vertical metres: +230m, -230m
Hiking time: 3h
Restaurants and pubs: Haute-Nendaz, Le Bleusy, Planchouet