Start from the Col de Bavella (a car park with no charge but with hollows and bumps, a tarmac car park with a charge).
(S/E) Follow the road towards Zonza, leaving the statue of Notre-Dame des Neiges on your right. After about 50 metres, turn right onto a path that soon becomes shaded (follow the GR®20to the north-west, marked in red and white). You will soon come to a fork in the road.
(1) Go straight ahead along the alpine variant of the GR®20(yellow markings; leave the GR®20to the left). Climb through a mineral landscape on a fairly steep path. Note a climbing cliff on the right. The path bends to the right and climbs steeply under pine trees to the foot of vertical walls. This brings you to Bocca di u Trouvone.
(2) Go down the other side, to the left, and wind up a few bends. Climb up through the rocks, ignoring a track on the left that leads up to Bocca di l'Arghettu. After threading your way between two rocks, reach the top of a slab equipped with a chain at the foot of tower no. 2.
(3) Climb down the slab with the help of the chain, facing the slope or turning around as you feel like it. At the bottom of the slab, two large steps are required to descend on stirrups fixed into the rock. Continue north up a steep path. This brings you to the foot of tower no. 3, at Bocca di u Pargulu, from where you have a superb view of the Côte de Nacre.
(4) Start the descent by continuing northwards. Soon turn north-west and descend steeply until you reach the junction with the GR®20.
(5) Follow the GR® downhill to the left, heading south-east (red and white markings).
(6) The path heads east and becomes a false flat when crossing. Make a few bends to cross the torrent beds, which are dry in summer. The path then heads north-east and climbs steeply.
(1) At the intersection at the start of the hike, turn right and follow the GR®20to the Col de Bavella (S/E).
