The sierra do Courel, which is crossed by the River Lor, is an unbelievably beautiful nature site depicted like no one else by local writer Uxío Novoneyra in his poems. Its highest peaks are Formigueiros, Montouto and Pía Paxaro, which are very appropriate for trekking and to enjoy nature in its wildest, most vivid form.
The very abundant, rich plant cover of this area is full of heather and oaks and, in the highest areas, we can see stands of kermes oak and other native trees. Its valleys are surrounded by chestnut tree-covered mountains. In O Courel several devesas (native forests), such as A Rogueira, are also worthy of mention. This is one of the richest and most beautiful botanical reserves in Galicia.