Hiking & nature

Ausserberg–Mund Suonen trail

Walking along historic waterways

Valais is one of Switzerland’s driest regions. This is why in times gone by, people invented ingenious irrigation systems – to this day, 3,000 of these so-called “Suonen” remain, measuring some 2,000 kilometres in total length. Part of the Ausserberg–Mund trail leads along these historic waterways.

Availability Today (Friday) open

Depending on the weather, the Suonen trail can be accessed from spring until autumn.

Subject to change without prior notice


The trail is free of charge.

Prices in CHF incl. VAT / Prices and products subject to alteration.


Route description

Starting from Ausserberg Railway Station, the route leads towards Choruclerri and the Niwärch Suone. Those with a torch can take the route through the 1.5-km-long tunnel. The path along the Suone is narrow, and the area above and below very steep (exposed).

Before reaching the houses in Ze Steinu, the route turns off to the right and follows the path along the Undra Suon. After crossing the Baltschiederbach stream, the route leads to the other side of the valley and follows the Gorperi Suon, which, barring one single area, is less exposed than the Niwärch Suone. This area can be avoided by taking a short tunnel. The trail continues along the Suone towards Burg, and leads to Hohwang and on towards the final destination of Mund. This is where the precious saffron spice has been cultivated since the fourteenth century. From Mund, the postbus will take you back to Brig.

Distance: 14 km
Walking time: 5 h 15 min.

The path along the Suonen requires a certain sure-footedness and head for heights, as the ground is very steep and the path very narrow.

Special notes

  • Instead of in Mund, the walk can already be concluded in Eggerberg. Walking time for this alternative route: 4 h 30 min. From Eggerberg, the RegioExpress Lötschberger takes passengers to Bern and Brig at hourly intervals.
  • You can book a guided walk of the Suonen via the Verkehrsverein Sonnige Halden. Here you will learn lots of interesting things about the culture and history of the Suonen.
  • The trail is quite exposed in parts, and is therefore only recommended for walkers who are sure-footed and have a head for heights. Sturdy shoes are essential.

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