Less than 1% of the surface of the Var exceeds 1500m. With its 1713m, Mount Lachens therefore has a dual climate originality. The first mountainous area to intercept depressions coming from the Gulf of Genoa, it is much wetter than the rest of the department, which enables, combined with low temperatures due to the altitude, the development of a remarkable mountain flora. This is how we are able to find the moonwort in the lawn which covers the top of Mount Lachens.