Park at Brunissard after the Chez Marius bar.
(S/E) Cross the road, then follow the GR®58, which shares the route with the GRP® Tour de la Dent de Ratier. Join a wider track.
(1) Continue straight ahead on the GR®, then leave the woodland and reach the Torrent du Pinet.
(2) Cross the stream. Continue the climb up through the mountain pasture; after a series of hairpin bends, you’ll reach the path coming from the Col d’Izoard.
(3) Keep to the right on the GR® to complete the climb to the Col du Tronchet. Take the path on the right to reach the viewpoint.
(4) Retrace your steps along the same route to return to the Brunissard car park (S/E).