Petit Bisse and the old Bisse de la Tsandra in Conthey
Les Côteaux du Soleil
-1/6°
Charming walk along two historical irrigation channels. The second, with info panels, offers a fascinating insight into this ancient Valais tradition. Glorious views throughout.
Difficulty
EasyLength
11.84 kmDuration
3:23 h
Description
The “bisses” of Valais are historical irrigation channels built to carry precious water from the glaciers to the fields, orchards and vineyards. At the beginning of the 20th century, Valais boasted about 200 bisses totalling 1,800 km, all built laboriously by hand. In recent years, many have been restored carefully.
This walk follows the course of two bisses, built in the 15th century to carry water to the fields above Conthey. Both are fed by meltwater from the Tsanfleuron Glacier on the massif of Les Diablerets. Each has its own character and reveals glorious views.
The walk begins at the start of the first channel, the Petit Bisse, where it is fed by the river of La Morge. The bisse still carries water every summer, from early June to the end of October. The delightful path follows alongside, through forest and pastures, as far as a micro-hydro power station at Mayens-de-My – where the water flows into the Bisse de la Tsandra.
The water of this second bisse no longer flows at the surface but through a sequence of underground pipes. A theme trail follows its route, with 24 information panels that explore the history of the bisses, describe the natural habitats along the way and reveal secrets of local wildlife. Along two particularly picturesque stretches, the water flows in the open.
The path is easy, with the gentlest of downhill slopes all the way – apart from one short section where the trail drops from the first bisse to the second. The views, too, are glorious the length of the trail: at first of the wild gorge of La Morge, and later over the vast sweep of the Rhône valley, across its orchards and vineyards to the snow-capped peaks beyond.
Highlights
- Delightful gently sloping trail through forest and across meadows
- Petit Bisse – working irrigation channel, flowing with water during the summer
- Bisse de la Tsandra – theme trail exploring the bisses, their history and local wildlife
Turn-by-turn directions
The hike starts at the beginning of the Petit Bisse at Grand-Zour, where the road up to the Sanetsch Pass crosses the river of La Morge. A restaurant offers the chance for refreshments before the hike.
The trail follows the full length of the Petit Bisse to Mayens-de-My. Here it turns sharp left and heads straight downhill for 67 vertical metres to meet the course of the Bisse de la Tsandra. The hike then follows the course of the underground bisse, via the theme trail, all the way to Aven.
Hikers who have arrived by car will need to return to their parking place at Grand-Zour. One attractive option is to start the hike as described, following the Petit Bisse to Mayens-de-My. Then, instead of heading down to Aven, walk up the Bisse de la Tsandra in the opposite direction – effectively following the first part of the theme trail in reverse. This leads all the way back to the river La Morge, a short way downstream from Grand-Zour.
Start
Grand-Zour (1440m)
Destination
Aven (932m)
Author's recommendation
After finishing the walk, order a glass of wine made from grapes grown in the vineyards above Conthey: you’ll appreciate it all the more!
Technical information
Altitude
1442m
932m
Ascent
+7m
Descent
-509m
Technique
Stamina
Experience
Landscape
Best time of the year
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Tags
Public transport
Approach
Parking
Source
This activity is brought to you by Valais/Wallis Promotion
