After skirting the moraine on the right bank of the Corbassière glacier, you begin a short but steep ascent to the Col des Otanes, at 2870m, the highest point of the TDC. It is from here that the panorama is fascinating, in this cirque of rock and ice where the Grand-Combin presides over the grandeur of one of the most beautiful sites in the Alps.

An hour’s descent takes you to the Tseumette. From the edge of this grassy saddle, you can admire the peaks of Mont-Pleureur and Ruinette. At the bottom of the valley, you can see the imposing 250m-high concrete wall of Europe’s highest arch dam. The descent continues as far as Mauvoisin.