Throughout Switzerland, pumptracks have been experiencing a boom for some time now. And Valais is no exception with plenty of circuits. A pumptrack is a mountain-bike trail up to two metres wide consisting of dirt rollers and banked turns. These rollers are used to generate speed through rhythmical movements, so that the entire circuit can be ridden as often as you like without pedalling. If a pumptrack is built properly, advanced riders will be able to jump from roller to roller, rather than just riding over them. Pumptracks can be made from natural soil, wood, concrete or asphalt.