Established in 1994, this nature reserve covers 1.5 hectares. It is located at an altitude of 750 - 790 meters in the municipality of Pont-Saint-Martin, near the Suzey castle.

Flora: the wetlands include marsh reeds and broadleaf cattail. Additionally, it is the only known station in Aosta Valley of spatulaleaf loosestrife.

Fauna: considering the small size of the reserve, it only includes some rare amphibian species of which two newt species.

How to get there
From Pont-Saint-Martin village centre take the regional road towards Gressoney, turning on the right when you find the sign for the Ivery hamlet ; then continue until joining the Holay village.