Guidebook with maps/step-by-step
1/ From the parking lot, follow signs for "L'Observatoire par sur le Grande Gorge" and pass the "Sur la Grande Gorge" sign.
2/ Once at "L'Observatoire", continue towards "Panorama de l'Observatoire".
3/ From "Panorama de l'Observatoire" continue towards "Table d'Orientation GR".
4/ From the "Table d'Orientation" signpost, follow the signs for "Téléphérique Gare Supérieure GR", passing "Panorama du Mt Blanc".
5/ When you reach the cable car, continue your hike following the signs for "Grange Gaby par Pré Berger". You'll pass the "Pré Berger" and "Les Treize Arbres" signposts.
6/ At "Grange Gaby", follow the signs for "L'Observatoire" to return to the parking lot and your starting point.