The trail starts at the “marmots” site and follows a tarmacked road before branching off sharply to the right to reach a trail along a former canal up to a triangular junction. Take the trail going up to the left to reach the RD 137. Leave the road and follow the steep trail to the left (take the steps in front of you). Walk along the cliff to see the fortifications (be careful not to take the trails leading to the climbing sites). You will get to flat ground. From here, follow the trail to the right on the edge of the ramparts to reach a first carpark (bus park). Go on until the lunette d'Arçon and continue towards the carpark. You will have a view overlooking the Guil and find an orientation table. If you look up, you will see the village of Eygliers Chef-Lieu and its church. Go on to the village. To go back, take the same itinerary from the village of Eygliers. When you reach the bus park in Mont-Dauphin (not the one for cars), take the trail going through the pines at the other end of the carpark (indicated with a yellow PR sign). The trail has large curves and leads to fields. Go down to the left at the junction and follow the trail to the marmots site.
For a panorama option, cross the road towards the lunette d'Arçon (fortified element). Turn right to take the trench made for attacks. Then, walk alongside the rockface up to the plateau that gives you an exceptional view of the gorges of the Guil.
"HIKING, On foot in the Guillestrois – Great WALKS" - Guidebook sold in tourism offices in the area.
From Guillestre, link up to the N94 towards "Briançon". At the roundabout of the N94, turn right to Eygliers station. Park your car on the carpark to the right a few metres from there.
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