The history of the Passy nature reserve

In the 1970s, the wealth of natural areas in Haute-Savoie was the subject of much interest. As developers grew increasingly ambitious and numerous tourist developments were planned, people began to raise concerns. The French government decided to create 9 national nature reserves.
In 1974, the Aiguilles Rouges national nature reserve was created, followed by the Sixt-Fer à Cheval/Passy nature reserve in 1977.
Between these two protected natural areas lay a small portion of land, which became the Passy nature reserve in 1980.