FERNEY TRAIL The Ferney Trail is one of the oldest and yet most favoured trail of Mauritius, regrouping nearly 2500 participants yearly. The Ferney Trail is held at La Vallée de Ferney, the sanctuary of the Mauritian biodiversity situated along the east coast of the island in the heart of nature where multiple endemic plants and birds nestle. The Ferney Trail is the perfect occasion to discover the island differently… with a positive spirit.