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.
Nessjeri - Obersta - Stigwasser
First mentioned in 1477, the Nessjeri begins at 2140 m near the Kelchbach stream. At first, it runs at an almost imperceptible incline across a rock balcony located diagonally opposite the Aletsch Glacier; then it plunges down into the valley via Nessel as a frothing stream. The Stigwasser and Obersta bisses (irrigation conduits), mentioned for the first time in 1521 and 1684 respectively, are both sourced in the Gredetsch Valley near Mundbach at altitudes of about 1300m.
Destination: Mund (1'188 m)
Distance: 13 km
Vertical metres: +170m, -1080m
Hiking time: 4h
Restaurants and pubs: Belalp, Mund