Caïros (rivière) walks

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.

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.

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.

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.

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.

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.