French Pyrenees' Lac Arrêt Darré and Troumouse cirque attract nature tourists

Lac Arrêt Darré, an artificial reservoir created in 1995 by the Institution Adour, supplies water for local agriculture, drinking water to nearby communes, the Danone plant at Villecomtal-sur-Arros and helps maintain river flows. The lake is managed by the Communauté de communes des Coteaux du Val d’Arros and offers a network of activities, including marked hiking trails, a mountain‑biking loop of about 16 km, an accrobranche park, and regulated fishing for species such as pike, perch and carp.

A few kilometres away, the cirque of Troumouse in the Hautes‑Pyrénées forms part of the trans‑border Pyrénées‑Mont Perdu UNESCO World Heritage site. At roughly 11 km in circumference it is the largest and most open of the region’s glacial cirques. Its high‑altitude pastures, lakes, marmots and seasonal livestock create a gentle, expansive landscape favored by walkers seeking a quieter alternative to the nearby Gavarnie waterfalls. The area remains accessible in summer when weather permits.