Bisse de Sillonin


Built in the 1450s, the upper part of this bisse has been abandoned. It is the most vertiginous bisse in central Valais


Total length : 8 to 10 km.

Altitude : Between 950 and 700 metres.

Route time : Between 2 and 3 hours.

Location :  The Lienne valley above St Léonard, to the right of the Rhône.

Difficulty : A stretch of the trail is quite sheer and not recommended for those suffering from a fear of heights. 

Ordinance Survey map 1 : 50'000  no. 273T Montana.

Best period : June to September.

This bisse contains water from mid-April to mid-October.