(S/E) Starting from the Notre-Dame de la Gorge car park, go past the roundabout and take the bridge over the Bon stream.
(1) Turn right to follow theGR®® Tour du Mont Blanc trail (red and white markings) towards the Refuge du Nant Borrant. The path climbs steeply in a straight line, with the Bon Nant stream below. A natural bridge is indicated by a sign. You can admire it before continuing along the path to reach the Roman bridge.
(2) Cross the bridge over the Bon stream (viewpoint over the gorge) and continue along the path towards the Refuge du Nant Borrant.
(3) Just before the Refuge du Nant Borrant, turn left towards the Combe Noire waterfall and the Refuge de Tré de la Tête. Turn left, cross the Bon Nant again and head for the Refuge de la Laya.
(4) Continue east-north-east until you reach the Combe Noire waterfall.
(5) After crossing the Tré la Tête torrent, turn right and begin the long ascent towards the refuge of the same name. Climb through woodland, following several hairpin bends, then across open terrain heading north-east.
(6) Once at the Tré la Tête refuge, follow the path to the left towards the valley. Walk a few dozen metres and take the path on the left, which descends quite steeply towards the valley floor. You’ll reach a wooden shelter.
(7) Continue north-north-east and, 100 metres further on, turn left onto the path which continues to wind its way down.
(8) At the T-junction, turn left and then right towards Notre-Dame de la Gorge (signposted; do not cross the stream on the right).
(9) At the bottom of a winding descent, turn left and cross the torrent’s ravine. At the first Fork in the road, turn right and continue downhill.
(10) At the junction, turn sharply right and descend along the hairpin bends. At the bottom, follow a path on the right for about a hundred metres.
(11) Then take a path on the left which passes close to a ski jump. Next, turn left and follow the Chemin du Praz, which runs alongside the Bon stream.
(1) Cross the bridge and return to the starting point (S/E).
a very beautiful route, completed by four adults and two children aged nine and twelve.