The Carvalhal da Reixela is seen as the most important portion of native forest of the region and one of the most important ones of the entire Douro coastline. These woods show the dynamic nature of the vegetation and the way it evolved over the years in the absence of human interference. The absence of agricultural and pastoral activity allowed for the spontaneous vegetation to recover and for the development of large oak woods, where the common oak (Quercus robur) is predominant, with the occasional emergence of the Pyrenean oak (Quercus pyrenaica).
