From the village of Ghisoni, follow the D69 south, then take the D169 junction towards the Ghisoni Capanelle ski resort (1,640 m). Continue to the end of the road at the top of the resort, which will be your starting point.
(S/E) Follow the Pietra Niella ski slope to the summit, then take the well-marked cairn trail. After an hour's walk (and a few steep sections), you will reach a grassy plateau and the Pizzolo spring, which is located in the middle of the alder trees.
(1) Continue climbing for a good hour, still heading south-west, to reach the beautiful Lake Bastani, populated by salmon and char.
(2) You will overlook it from a few dozen metres above as you skirt around it to the west to reach Punta Bacinello.
(3) Turn left and follow the moderately sloping ridge that climbs to the summit of Monte Renoso, which you will reach after about three hours of walking in total. Descending a little on the eastern slope of Renosu, you can enjoy a view of Lake Niellucciu.
(4) Take the same route back to the car park at the Ghisoni Capanelle ski resort (S/E).