Bieugne (torrent) - Affluent de la Roya walks

Starting from the Refuge de Nice, the fourth stage of this journey through the Mercantour is the shortest. Short but just as difficult. You’ll pass the Baisse du Basto, the highest point ofthe GR®52. You’ll cross over to Lac du Basto, then it’s the climb up the Baisse de la Valmasque, before descending into the Vallée des Merveilles.

This route, which runs parallel to the border, is dominated throughout by the large peak of Gélas, the highest summit in the area.

This second day will take you to the foot of the Cime du Gélas (just 200 m below the summit); you’ll walk for a long time alongside Lac Long and the superb Malédie. You’ll then head into another small valley to admire the Cime Saint-Robert. The Lac Blanc, from which the stream flows, is none other than the Vésubie, and of course, the Gélas on its western face. The route will become more familiar and less strenuous once you rejoin the path coming from the Lac de la Fenestre.

This first stage takes you from the bottom of the Roya Valley to the Nice Refuge. The proposed route is longer and more difficult than the one via the Baisse du Basto, but much less busy. On this demanding detour, you’ll enjoy the passage over the Pas de l’Agnel, the stretch into Italy as far as the Pas de Pagari, stopping off at the Rifugio Pagari, nestled against the summit of the Malédie. During the descent to the Refuge de Nice, you’ll enjoy the tranquillity of the Lacs Clapier.

This long one-way hike (two vehicles required) will take you up the pretty Valmasque Valley and its three beautiful lakes to the pass above the Vallée des Merveilles, before climbing to the summit of Mont Bégo via a sometimes steep and slightly vertiginous path, in an area where you may encounter magnificent ibex. Finally, there is a very long descent to the lakes around the Refuge des Merveilles, then through the Vallon de la Minière to Lac des Mesches.

The first part of the magnificent circular walk starting from Castérino to explore the Vallée des Merveilles, passing by the Refuge de Fontanalba, the rock carvings in the Nature Reserve and the Voie Sacrée, and finishing at the Refuge des Merveilles.

Discover the Vallée des Merveilles by connecting the Vallée de la Gordolasque to the famous Refuge des Merveilles.

The first stage of a three-day trek in the heart of the Mercantour National Park, this route immediately takes the hiker into the high mountains via a little-used alpine route, away from the classic Pas de l’Arpette. On the itinerary: a steady climb up the Vallon des Verrairiers from the Gordolasque Valley, crossing the Pas du Trem (2,477 m) at the foot of the legendary Cime du Diable (2,685 m), then a long descent past a string of glacial lakes – Lac du Diable, Lac de la Muta, Lac du Trem, Lac Fourca – down to Lac Long Supérieur and the Refuge des Merveilles (2,130 m). A route combining the geological richness of the upper Gordolasque, breathtaking views of the Authion, Mont Capelet Supérieur and the Mediterranean on clear days, and a majestic entrance to the Vallée des Merveilles, a site listed as a Historic Monument. Characteristic wildlife: chamois, ibex, marmots.

Second stage of the five-day Vievola–Saint-Martin Vesubie hike. ⚠️ 18/08/2026: Route amended at point 4.

This itinerary allows you to discover the wonders of this valley. In particular, the famous engravings such as Christ, the Tribal Chief and the Altar Rock. But be careful, these areas are monitored!