Information on how to get to the starting point, as well as details on difficulties, alternative routes and precautions to take, can be found in the Practical Information and During the Hike sections.
(Direction) Several hikers suggest doing this hike in the opposite direction, which is of course possible, but early risers will then miss out on the benefit of a sunrise over the Obious and the other Isère peaks of the Dévouluy.
(S/E) From the car park, follow the path up the Serre shoulder to the north-east (sign indicating the climbing site). After 300 m, look for a cairn on a path leading off to the right.
(1) Leave the path that climbs towards the climbing site and take the path heading east along the hillside, indicated by the cairn. The route remains level before crossing a ravine. It then climbs gradually before turning north and climbing up the slope and returning to the west. It joins the edge of the western cliff of the Gicon at IGN elevation 1659.
From there, follow the path that climbs northwards, as close as possible to the western cliff of Le Gicon, until you come within sight of a huge semi-detached rock on the western flank of the cliff, Le Piéroux.
(2) An auxiliary path allows you to make a round trip to the northern promontory of the Piéroux. After admiring the view, return to the main route and continue climbing northwards along the cliff.
⚠️ It is easy to lose the path; if this happens, always return west towards the cliff to find the main path.
This will take you to the cairned summit of Gicon (incorrectly spelled "Gigon" by the IGN since 1986, despite repeated requests for correction from locals and hikers).
(3) From the summit, follow the edge of the north cliff eastwards until you reach a weak point where you can descend onto the north shoulder of Gicon.
(4) Descend carefully - especially if the ground is wet - on this shoulder and follow it to the rocky outcrop below.
(5) Several couloirs above the scree descend from this ledge due east towards the Aup hut, which is clearly visible below. Choose one of them and descend off-trail towards the scree. Follow the scree eastwards until you reach the Aup hut.
(6) Turn south-southeast onto the grassy carriage road that descends along the Queyras torrent. This road turns into a forest road at an elevation of 1,492 metres.
(7) Continue south on this road, which then turns west to return to the starting point (S/E).
I enjoyed the hike, with good descriptions and beautiful scenery, except that a fairly dense fog at the summit disrupted us. Thank you for the GPS tracking 😊 otherwise we would have turned back. To be done again in good weather.