Hike along the Allondon river (Geneva)
At the end of the summer of 2020, I went on a hike in Geneva, following the Swiss part of the Allondon river until its confluence with the Rhône. The river starts in Pays de Gex (France) below the Jura mountains. I visited its source many years ago.
Here is an official brochure (PDF) about the Allondon river.
