The Chapel of Santa Catarina de Fuste or the village of Rio de Frades are the two entry points to the “Black Gold Route.” Along the route, which centers on the tungsten mines of Rio de Frades— extensively mined by the Germans during World War II— we are accompanied by the waters of the Pena Amarela and Covela streams, excellent spots for canyoning. In addition to the village of Rio de Frades, Pedrógão is worth a stop to recharge your batteries.