Hiked along the bisse Heido in the Nanz Valley. The "bisses" or Suonen are traditional irrigation channels built several centuries ago to water the cultivated land with previous glacier water.

The Suone Heido was first mentioned in 1305. There is a wonderful trail following this water channel.

I took the Postauto to Visperterminen and the chairlift up to Giw.

I started the hike in Giw and walked uphill to the Gibidum Pass.

See also in German  http://www.hikr.org/tour/post86285.html

See also on the map  https://.map.wanderland.ch/?lang=de&bgLayer=pk&layers=Wanderwegnetz&resolution=5&X=641170&Y=120345