Der Übergang über den Pass da la Duana stellt die Verbindung mit Soglio her und ergibt eine sehr interessante Wanderung. Grossartig ist der Blick vom Felssaum des Übergangs Richtung Bondasca-Berge. Die Route bildet zugleich den Zugang zur Besteigung des Piz Duan, sowie für die Wanderungen von Casaccia über den Bergalgapass und den Pass da Roda.
From Casaccia – carpark at the small cemetery – follow the winding road leading up through the forest to the entrance into Val Maroz. The footpath takes a more direct route, and repeatedly cuts back into the road with which it later reconnects on a more level part. After passing the junction at the Septimer Pass, the road turns over a bridge and towards the huts of Maroz Dora (1799 meters above sea level). Without crossing the stream, follow a wide footpath along the left valley slope. Beyond a grassy meadow lies Maroz Dent. At this point, the path leads downhill and onto a footbridge across the Maira creak. On the other side, you will arrive at a branch in the path: the left path continues to Val da Cam, but turn right instead and walk along the stream. Shortly after, there is a slope between grassy ridges that leads all the way up to the ridge in front of Lägh da la Duana. The trail branches off to Piz Duan on the left. The transition route to follow, on the other hand, leads along the north bank of the lake and continues into the flat valley. You will later reach the meadows around a second mountain lake, the Lägh da la Caldera, which is the origin of the Maira river. Walk around the right side of the lake and turn south to the rocky edge of Pass dala Duana (2694 meters above sea level). On the southern slope, you will start to descend on the marked path. At the Cadrin Huts, this route meets the trail from Val da Cam and descends on a beautiful old mule track through mostly forest scenery. You will finally come across the mountain terraces Plän Vest (1821 meters above sea level) and Tombal until the final descent to Soglio, where this long hike ends.