A Descent That Falls Into Place
To witness the most beautiful night sky of the Hautes-Pyrénées, this is where you must go. The first French territory to earn the label “International Dark Sky Reserve,” the IDSR of the Pic du Midi de Bigorre safeguards a 3,000 km² area between Lourdes and Saint-Lary-Soulan, where everything is done to reduce light pollution. At the heart of this darkness, in the darkest zone of the reserve, stands the Pic du Midi Observatory. A landmark in astronomy where, if you plan ahead, you can sleep there. And it serves as the starting point for a very beautiful nocturnal hike. An unforgettable descent, with the stars as your only guide.
Practical
Itinerary : from La Mongie, take the last cable car of the day up to the peak. Then follow the trail toward the Col du Tourmalet.
Duration : 4 hours to complete 7 km and 760 m of descent.
Tip : guided trips with the local agency Acumpanyat Expériences. acumpanyat.com
A Little Closer to the Firmament
With its three domes perched on a promontory at an altitude of 2,930 meters, the Saint-Véran Observatory, in the Hautes-Alpes, is one of the highest in Europe. Year-round, it welcomes amateur astronomers drawn as much by its state-of-the-art equipment as by the exceptional weather conditions offered by this part of the Queyras (300 days of sunshine per year). The observatory is also open to hikers who love the stars, who climb there in the late afternoon, then descend at dawn after a full night to greet the celestial bodies.
Practical
Itinerary : from the Maison du Soleil et de l’astronomie of Saint-Véran, cross the ski runs and then take the ridge path (yellow markings).
Duration : about 4 hours of walking (900 m of elevation).
Advice : booking required. saintveran-maisondusoleil.com
Sleepless Nights in the Black Triangle
No need to climb peaks to escape light pollution. Between Figeac and Cahors, in the Causses du Quercy Regional Natural Park (Lot), there is a plateau area enjoying extraordinary natural darkness. With 55 communes labeled “Starry Towns and Villages Territory,” this Black Triangle of the Quercy offers a fantastic playground for night hikers… regardless of their knowledge of astronomy.
Practical
Itinerary : for a gentle introduction, we recommend the night trail starting from the village of Corn. A way to rediscover the landscape, thanks in particular to phosphorescent panels.
Duration : two hours, taking your time on this easy 4 km path.
Advice : the astronomy clubs of Gramat and Gigouzac offer guided night walks all summer.
➤ Article appeared in GEO HS magazine no. 133, “France, our favorite walks for the summer”, June-July 2026.
➤ Do you love GEO? Then to miss nothing, discover our subscription plans to receive GEO every month at your home with ease.
