Access is close to the A40 motorway exit. Park in the car park at the Étrembières Chapel (D906A).
(S/E) Cross the main road towards Château d’Étrembières and you’ll reach a second signpost. Turn right towards ‘Les Eaux Belles’. The route begins with a wide, vehicle-accessible track through the forest and you’ll come to a long concrete building on your left (spring water collection point).
Just after passing it, a sign indicates the direction of the Sentier des Voûtes with a warning. This route is not recommended for those prone to vertigo or in bad weather, as the path is steep and not advisable if wet.
(1) At the first junction, continue straight ahead.
(2) At the ‘Sur les Eaux Belles’ junction, turn left towards ‘Sous les Ches’ and ‘Pierre Vieille’.
After about 100 m, you will see a red arrow pointing to the left on a tree (see photo). Follow this direction where the path becomes narrower and steeper, winding around trees in places, and continue to follow the red markings on the trees and rocks.
Further up, you will see the rocky outcrops; continue climbing. The path takes you between two sections of rocky outcrops, which you can pass by using your hands for added safety, though it is not difficult.
(3) You reach Pierre Vieille. Follow the sign towards “Crêt du Chable”, a wide path that slopes gently downwards. You reach “Crêt du Chable” in about 15 minutes.
(4) Enjoy the view over the Arve Valley and Mont Blanc. There are departmental information boards and a bench available for a break. For the return journey, I suggest a much easier path.
Retrace your steps a little way back to the “Crêt du Chable” junction. Turn right towards “Chapelle d’Étrembières”.
After a 300-metre descent, you’ll reach a junction where you turn left, then continue straight on for 800 metres.
(5) At the “La Chaine aux Bois” junction, your direction is not indicated by the sign, but continue straight on along the path you arrived on. Continue downhill for 700 m until you reach a junction.
(6) Ignore the path branching off to the right and turn left onto a less defined track; this path is slightly steeper but offers a view of the village of Étrembières, the chapel and the car park. You will reach your starting point after approximately 500 m (S/E).