Upstream from the coastal path and downstream from agricultural land, this 19-hectare natural area, mainly made up of pinion pines, is an exceptional preserved site between the Pansard campsite and the Baie des Isles residences.

Its name testifies to the fact that it was once attached to the Bastidon wine estate, which belonged to Henry Potez, a great pioneer of the aeronautics industry.
Owned by the Conservatoire du Littoral, classified and protected since 1990, it is managed and maintained by the commune.
Since 2017, thinning by cutting pine trees has allowed young oaks to grow and the herbaceous and shrub layer to recover.
Regeneration is also ensured by the installation of ganivelles.
From September to June, the site is maintained through eco-pasturing by donkeys, which encourages the diversification of the vegetation by eliminating certain invasive grasses and contributes to the natural fertilisation of the soil.
Next to the pine forest, a reed bed and wet meadows complete the range of habitats and enrich the landscape diversity of this site.