A single track starts in La Daille from where the train runs up an elevated track for . The remaining . runs through a drilled tunnel. Halfway a section of
double track allows the climbing train to pass the downward train. A cable runs from the front of the lower train, via a construction of electric powered
pulleys in the mountain station to the back of the descending train. The
mass of the descending train helps pull the climbing train and electric motors provide the power to overcome the weight difference between the climbing and descending trains plus any friction. During most runs the climbing train will be far heavier than the descending train as the main function of the Funival is to take skiers to the top of the mountain. If the descending train is heavier than the climbing (when more passengers travel down than up) the electric motors can work as brakes. Each train is also provided with mechanical brakes to act as emergency brakes if the main cable should break. Although the Funival runs summer and winter it was primarily built to bring skiers to the top of the mountain. == Technical details ==