Fisgas do Ermelo
The Fisgas de Ermelo are the most emblematic site in the protected area of the Alvão Natural Park.
They form one of Europe’s largest waterfalls, with a drop of about 400 metres, set in quartzite rock roughly 480 million years old. It was the fracturing of that hard rock that let the Olo river cut — “enfisgar” — its way through, giving the most beautiful waterfall in mainland Portugal its popular name.
The site holds high scientific, educational and heritage value, along with a remarkable vocation for nature tourism. Fossil traces in these rocks, left by long-extinct marine organisms, can also be read as a kind of illustration of distant times when life existed only in the sea — set against the exceptional biodiversity the protected area is known for today.
The singular, wild beauty of the Fisgas de Ermelo draws tens of thousands of visitors every year, who leave with every sense awake and with the wish, and the promise, of returning many times over. Both above and below the falls there are natural pools of pure, crystalline water — known locally as “piocas” — that invite a cold swim.
In 2016 the PR3 Fisgas de Ermelo walking trail opened, bringing a closer, more detailed view of the main natural features of the Alvão Natural Park. Besides unusual perspectives on the waterfalls and chance encounters with the richness of the flora and fauna, it also lets anyone who wishes cross mountain villages and discover the modus vivendi of the local people.