Start in Madrano near Airolo. Easy Albsträsschen to Lago Ritom. (Further tours in the direction of Lugmanierpass possible only in absence of snow.At the end of April 2017 there was still a lot of snow from about 1600m, so I had to push the first part of the singles and wear, until about Pian Töi Snow was not too soft and the gradient was just right - a true MTB surf When the direction changed from northwest to southwest, (Alpe) a terrific single started down the valley after a few meters was snow-free.