The Fórnea of Porto de Mós is a natural depression (almost like a sinkhole) in the shape of an amphitheater that is located in the Aire and Candeeiros Mountain Range Natural Park (Parque Natural das Serras de Aire e Candeeiros). It measures one kilometer in diameter and stands 250 meters high. Locals call it Fórnea because its shape is similar in shape to an oven (forno in Portuguese). This geological phenomenon was caused by the erosion from rain and spring waters in the mountain range’s limestone-rich soil. There are several springs in the valley, which are the main cause of the erosion that carved this natural amphitheater out of…
