The 2.2 km long trail gives you an insight into the history of the ancient water courses of Valais, known as "suonen" or "bisses". There are information boards all along the very interesting one-hour walk. The start of the footpath is about 45 minutes' walk from the church in Mase or you can drive by car along the "Route des Mayens" as far as the "Bisse de Tsa Crêta".