The previous day I was leading an evening tour down in the valley, so I joined the group on the second day after their departure from the cabane des Diablerets. As I started down from the cable-car towards the hut, I saw them straight in front of me, at the same level as I was, moving up the scree towards the glacier.

On our way up.

Walking on the glacier towards the Devil's Skittle (La Quille du Diable).

The group on the karst.

Heading back, view towards la Tête de Barme (3,185 m), from where the second rock fall over Derborence took place in 1749 (http://www.derborence.ch/histoire/).

See a longer account of the whole trip here.