Col de l'Épine car park.
(S/E) Head south.
Turn right at the first fork, at the PDIPR sign, towards Col du Crucifix. Follow this path, initially heading south. Reach elevation 955.
(1) Turn left. The trail veers off and then heads south again. Reach the Col du Crucifix.
(2) At the PDIPR sign, turn left towards Saint-Sulpice and Vimines via the Roman road.
(3) At the PDIPR sign, turn right towards Col Saint-Michel. Follow this path south.
(4) At the crossroads, continue straight ahead on the path, ignoring the one on the left. You will reach Col Saint-Michel.
(5) Turn right towards the François I Caves.
(6) Take the hairpin bend to the right towards the François 1er caves.
(7) Once at the caves, continue along the path. Leave a path on your left and you will reach a Y-junction.
(9) Turn at a right angle and continue on the right. You can take a small path that leads to a viewpoint over Lake Aiguebelette.
(2) At the Col du Crucifix, turn left and return by the same path you took to get to the Col de l'Épine car park (S/E).
(especially given the previous comments mentioning the viewpoints!)