A transitional zone at the upper margins of the forest, the megaphorb is an area with communities of exuberant plants with broad leaves, seeking sunlight to ensure their development. Under the cover provided by this vegetation, a miniature world of animals and plants make the most of the conditions. The dorine protected in the Provence-Alpes-Côte d’Azur region, it is restricted to the few wet areas of this region. In the extreme west of the Les Écrins massif, it is found on the banks of mountain streams and brooks. Here, just after the snow melt, it lifts up its golden head forming beautiful carpets.