Friends and I ride this spot all the time. You take a train from the lake down in Montreux up to a little over 2000 meters and then it is up to you to find the singletracks. I know of four different ways down and I just started using Google Earth to find others. Here are some pics.
The runs are almost 2000 vertical meters of singletrack heaven.
The runs are almost 2000 vertical meters of singletrack heaven.