From Bagnella take the road that runs along the lakeside on the western side, at first beaten dirt track and further on a mule – track, to the power plant of Brolo. Go uphill along the trail to the left until the course flattens out and passes under the penstock and head for the trail that follows the coastline just a few metres from the lake.
Near Oira the trail goes uphill alongside the dry – stone walles of houses and coltiveted plots until reaching village where you take the road that links it to Nonio. From the church of Oira stay on the paved road for three haiprin bendas until reaching the chirch situated on the right side of the road.
On the left side of the road exactly opposite the church a trail opens up in the wood pointng towards south – west; follow this as far as the bridge on the torrent Qualba, cross this and head south. After about 50 metres take the trail to the right leading uphill (it isn't very conspicuous) until joining tha trail which descends to Nonio. Continue south bypassing some farm cabins over flat terrain until arriving in Ronco Superiore, where to the left there is a obvious trail which leads downhill to Ronco Inferiore.