Vallée de Ferney, Nature reserve in Grand Port District, Mauritius

Vallée de Ferney is a nature reserve in Grand Port District covering around 200 hectares of protected land, featuring dense forest. Multiple hiking trails wind through native vegetation and connect different parts of the woodland.

The 200-hectare reserve was established at the end of 2006 as a conservation trust by the land-owners with the Mauritian Wildlife Foundation and local authorities. In 2004, surveys during a planned highway through the valley found species new to science or thought extinct, and petitions led to the road being diverted. The reserve was inaugurated by Prime Minister Navin Ramgoolam on 2 August 2008.

The reserve's name comes from the Ferney estate, and its entrance lies just north of Ferney Falaise Rouge off the B 28 road. At the bottom of the valley a tiny stone museum recounts the area's history, and beside it a garden grows edible and useful plants. Higher up, the restaurant and visitors complex occupies an old hunting lodge, with giant tortoises and a nursery selling endemic plants nearby.

Visitors should register in advance and ideally arrive before 11:30 AM to watch the daily feeding of Mauritius kestrels at the trailhead. Early morning is the best time to explore, when the forest is most active and birds are most visible.

In 2004, surveys by the Environment Monitoring Committee, prompted by a planned highway through the valley, found species new to science or thought extinct, including the pandanus Pandanus iceryi and Pandanus macrostigma. The road was diverted after local petitions. The critically endangered tree Eugenia bojeri was first recorded here.