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.
