The best way to discover the park is on foot. Thus, if one knows how to see, one may discover the playful elves who inhabit it. Oak, poplar, ash and alder trees, and more than 20 species of lichens and ferns 200 live here. Sometimes the vegetation is so dense it hardly lets any light pass. But this shady and secret forest is as generous as its waters, springs and waterfalls. There's no green here; what there are, are landscapes of a thousand greens. And hidden in the heart of the forest, the monastery of Caaveiro, ancient – with more than 10 centuries of history – and spectacular views of this magical "fraga" (forest).