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Caïros (rivière) walks
The Cime du Diable
Visorando Member
10.27 mi
+3,845 ft
-3,858 ft
8h 05
Difficult
Departure from La Bollène-Vésubie (Alpes-Maritimes)
Hike along the Authion border, climb the Cime du Diable (2,685 m), with views of the lakes of the Vallée des Merveilles and its ancient rock carvings.
Malmort Castle
3.64 mi
+2,060 ft
-2,073 ft
3h 30
Moderate
Departure from Saorge (Alpes-Maritimes)
A former 14th-century stronghold on the right bank of the Roya, Malmort Castle formed part of a defensive system controlling the Roya Valley under the rule of the House of Savoy.
Mercantour route via the GR®52
65.54 mi
+21,585 ft
-24,639 ft
7 days
Very difficult
Departure from Saint-Martin-Vésubie (Alpes-Maritimes)
TheGR® 52 is a route that crosses the Mercantour National Park, through the Alpes-Maritimes from Saint-Dalmas-de-Valdeblore to Menton.
ThisGR® route is very challenging due to the varied terrain and significant elevation changes.
You’ll reach altitudes of up to 2,700m, where you can admire the high-mountain landscapes, flora and fauna. Then, in the second half of the route, you’ll encounter panoramas that are more southern in character but just as extraordinary.
Refuge des Merveilles - Baisse de Camp
8.26 mi
+1,946 ft
-3,150 ft
5h 30
Difficult
Departure from Tende (Alpes-Maritimes)
The fifth stage ofthe GR®52, where southern landscapes give way to mountain scenery. Challenging due to its elevation gain, this stage follows the old Italian border, where you’ll discover numerous military remains. Notably at Authion, where one of the last battles in France took place, resulting in the deaths of 273 French soldiers just a few weeks before the armistice of 8 May 1945. The views here are fabulous.
From the Refuge des Merveilles to L'Authion via the Pas du Diable
6.11 mi
+1,850 ft
-2,159 ft
4h 25
Moderate
Departure from Tende (Alpes-Maritimes)
A beautiful classic route on theGR®®52. As you progress along this three-part itinerary, you will appreciate the beauty of the lakes up to the Pas du Diable, then the very chaotic landscape at the foot of the Cime du Diable and Mont Capelet Supérieur. Finally, after the Baisse Cavaline, you will enter a more Mediterranean setting to discover the Authion massif, a historic site during the end of the Second World War.
La Minière de Vallauria - Col de Turini
12.49 mi
+4,009 ft
-3,635 ft
8 hrs
Very difficult
Departure from Tende (Alpes-Maritimes)
Thissecond stage is the most alpine of the three. At the Refuge des Merveilles, you’ll admire the beauty of the landscapes, from the Cime du Diable to the Vallon des Merveilles. You’ll pass several lakes before descending into a more Mediterranean-style valley at the Pas du Diable. With the Redoute des Trois Communes in sight for much of the way, you’ll walk along the old border ridge, dotted with defensive structures. Near the Authion, numerous ruins will remind you of the end of the last war.
Walks near Caïros (rivière)
Refuge des Merveilles - Refuge de Nice
5.43 mi
+2,543 ft
-2,201 ft
4h 45
Difficult
Departure from Tende (Alpes-Maritimes)
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!
Pont du Countet - Refuge des Merveilles
3.63 mi
+2,697 ft
-1,276 ft
4h 00
Moderate
Departure from Belvédère (Alpes-Maritimes)
Discover the Vallée des Merveilles by connecting the Vallée de la Gordolasque to the famous Refuge des Merveilles.
From Pont du Countet to the Refuge des Merveilles
5.87 mi
+3,271 ft
-1,824 ft
5h 35
Difficult
Departure from Belvédère (Alpes-Maritimes)
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.
La Baisse de Camp d'Argent – Sospel
13.53 mi
+1,670 ft
-6,289 ft
10 hrs
Very difficult
Departure from La Bollène-Vésubie (Alpes-Maritimes)
The sixth stage ofthe GR®52, where the landscapes change dramatically. Due to its length and significant descent of nearly 2,000 metres, the stage is very difficult. The descent to Sospel, which makes up two-thirds of the route, puts a real strain on the knees and ankles. Please note, it gets very hot in summer on this section.
Nice Refuge - Merveilles Refuge
5.74 mi
+1,995 ft
-2,303 ft
4h 20
Difficult
Departure from Belvédère (Alpes-Maritimes)
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.
Refuge de Nice - Refuge de la Madone de Fenestre
3.36 mi
+1,512 ft
-2,533 ft
2h 50
Difficult
Departure from Belvédère (Alpes-Maritimes)
This route, which runs parallel to the border, is dominated throughout by the large peak of Gélas, the highest summit in the area.
Ascent to the Merveilles refuge from Lac des Mesches
4.74 mi
+2,487 ft
-46 ft
4h 20
Moderate
Departure from Tende (Alpes-Maritimes)
The Refuge des Merveilles can be a destination in itself or the starting point for a guided tour of the petroglyphs or other hikes. The climb to the refuge via Lac des Mesches takes 3 hours and 15 minutes (excluding breaks) and has the advantage of being accessible by car or public transport (see "Practical Information").
Madone de Fenestre refuge - Pont du Countet
7.75 mi
+2,812 ft
-3,642 ft
6h 00
Difficult
Departure from Saint-Martin-Vésubie (Alpes-Maritimes)
Route linking the Vésubie and Gordolasque valleys.
From Valmasque to Lac des Mesches via Mont Bégo
13.66 mi
+4,006 ft
-5,118 ft
10 hrs
Very difficult
Departure from Tende (Alpes-Maritimes)
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.
Le Boreon - Refuge de Nice
10.85 mi
+5,971 ft
-3,678 ft
12 hrs
Very difficult
Departure from Saint-Martin-Vésubie (Alpes-Maritimes)
The most difficult stage of thisGR®, but the most beautiful for its landscapes, flora and fauna: chamois, marmots, ibex.
After the Pas des Ladres, we chose to take theGR®52via the alternative route that passes close to the Col de Fenestre, then descends to Lac de Fenestre before reaching La Madone de Fenestre.
Three sections are particularly difficult: between Lac de Trecolpas and the Pas des Ladres, the ascent of the Pas du Colomb, and the descent from the Pas du Colomb.