Very pretty winter walk which you can start either in Brione (cross the bride by Ristorante Piee) or between Brione and Gerra (cross the bridge in Alnasca, there are a few parking places and a bus stop next to the bridge). Depending on snow conditions you may even do the walk without snow shoes but most likely they will be required. This walk goes along the same path as the summer trail (on the right side of the river). You cross some interesting groups of old rusticos along the way. End of this walk is on the new bridge between Gerra and Frasco. Here you can cross to the other side of the river and continue on to Sonogno.