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Riou

verified Ungraded Unknown flood risk Moustiers-Sainte-Marie, Alpes-de-Haute-Provence

Clue de Riou drops 240m of limestone in 9 rappels above Moustiers Sainte Marie, the longest a 50m free hang, over a 4 hour day.

Named as an explicit exception in the Alpes-de-Haute-Provence decree: open year round alongside the department's dry canyons, rather than limited to the general 1 May to 30 November window that governs most of its neighbors. No fee or registration.

Logistics

ManagerPréfecture des Alpes-de-Haute-Provence
PermitNamed exception under Alpes-de-Haute-Provence decree n96-1399: the Ravin du Riou (Moustiers Sainte-Marie) is explicitly authorized year round, alongside dry canyons, rather than being limited to the department's default 1 May to 30 November window. No fee or registration.
Distance1500m
Time4 hr
Technical9 rappels, longest 50m
SeasonApr-May
Coordinates43.8541, 6.2291

Sources