In Saint-Marcel, a huge, centuries-old chestnut tree near the Plout Sanctuary indicates the start of the magical Verruc path leading to the ACQUEVERDI, 'eiva verta' in the patois of Saint-Marcel.

Here, one breathes in an enchanted and muffled atmosphere of tranquillity and silence accompanied by the gurgling of the Acqueverdi, of an extraordinary and luminous green-blue colour, a stream on whose banks grow the essences that make this Alpine gin unique.