The exuberant vegetation covering the mountains, exhibit every shade of green, include a holly bush wood - unique at a national level - and endemic species such as the Gerês lily, whose blue-violet colours grace the fields. The rugged mountainous terrain is cut across by rapidly flowing rivers and streams, including many waterfalls, which finally slow down their pace in dams such as those of Caniçada, Vilarinho das Furnas or Portela do Homem. The landscapes are quite stunning.