Fojos are old wolf traps. This animal, now protected, was for centuries the object of persecution motivated by a fear that was instilled in the minds of upland peoples through its association with the after world and also by the attacks made on their animals as they grazed in the mountains. These structures, today a cultural heritage, occur only in the North of the Iberian Peninsula.

Fojo do Lobo de Fafião is considered one of the best preserved examples in the Iberian Peninsula and represents to the local community a symbol of its history and culture as well as the struggles between men and wolves .

It consists of a granite structure of converging walls, and a circular pit. The walls total about 64 meters in length and with an average height of 2.17 meters, converge into the mouth of the fojo (trap), into which the wolves were driven by beaters. It is believed that it was mainly used in winter, the time when farmers drove their goats and cattle to Monte de Baixo, located southwest of the village and bounded by the Fafião and Cávado rivers. The fojo pit itself was covered with horizontally arranged wood and a layer of branches, easily crossed by the wolf. The hunters, suitably armed with weapons, prevented the wolf from escaping via the waters of the rivers, driving it into the fojo, where men were waiting to kill it. It is unclear exactly when it was built but is believed to date back to the eighteenth century the only certainty being that it was restored in the mid-nineteenth century. It then underwent improvements and clearing work in the 1980s and 1990s.