GR 52A

GR 52A. The GR 52A is a variant of the long-distance GR 52 hiking trail, located entirely within the Alpes-Maritimes department of southeastern France. It serves as a strategic connector within the Mercantour National Park, primarily designed to provide hikers access from the Vésubie valley to the renowned archaeological and scenic sites of the Vallée des Merveilles. This path traverses high-alpine terrain, linking key mountain refuges and offering an alternative, often less-traveled, route through the southern Alps.

Route description

The trail typically begins near the village of Saint-Martin-Vésubie, a major gateway to the Parc national du Mercantour. It ascends through the Vallon de la Minière or adjacent valleys, crossing high passes such as the Pas de la Cavale to enter the core of the Massif du Mercantour. The route offers continuous panoramic views of peaks like Mont Bégo and Cime du Diable, while skirting the shores of alpine lakes such as Lac des Mesches. Its primary function is to connect the GR 52 from the north with the network of trails exploring the Vallée des Merveilles and Fontanalba, areas famous for their thousands of Bronze Age rock engravings. The terrain is rugged and exposed, requiring proper equipment and experience, with critical support provided by the Refuge de la Valmasque and the Refuge des Merveilles.

History

The trail was established and waymarked by the Fédération Française de la Randonnée Pédestre as part of the extensive Sentier de grande randonnée network. Its creation was directly motivated by the growing public interest in the prehistoric sites of the Vallée des Merveilles, which were studied extensively by archaeologists like Claude Salicis. The route formalized ancient pastoral and military paths used for centuries, including those historically connecting the Comté de Nice to the Duchy of Savoy. Development accelerated with the founding of the Parc national du Mercantour in 1979, which aimed to manage visitor access to sensitive ecological and cultural zones. The GR 52A's alignment ensures a logical, managed approach to the archaeological sector from the major trailhead at Saint-Martin-Vésubie.

Major intersections

The GR 52A forms junctions with several other significant trails. Its northern terminus intersects the main GR 52 near Lac de la Fous or the Pas de la Cavale. A crucial southern junction occurs where it meets the GR 52 again, as well as trails leading to the Refuge de la Valmasque, providing direct access to the Vallée des Merveilles. It also crosses paths with the Tour du Mercantour long-distance route. Other key intersections include links to trails descending to Casterino in the Royà valley and paths connecting to the Refuge de Nice and the Refuge du Mont Bégo. These intersections create a comprehensive hiking circuit around the Massif de l'Argentera-Mercantour.

See also

* GR 52 * Mercantour National Park * Vallée des Merveilles * Saint-Martin-Vésubie * Sentier de grande randonnée * Mont Bégo

Category:Hiking trails in France Category:Alpes-Maritimes Category:Provence-Alpes-Côte d'Azur