Ruta de la Plata

The first known traces of human occupation in the Aller Valley go back to the 4th 3rd millennium B.C.. The first hillfort settlements appear with the Iron Age, during the first millennium B.C., 8 of which have been catalogued within the borough.

Late, superficial Romanization left us the votive tombstone dedicated to Jupiter that is conserved in the church of San Vicente de Serrapio. Not to forget the Roman road that penetrated from the lands of León through Vegarada or La vía de la Carisa.

The High Middle Ages saw the building of the churches of San Juan el Real (Llamas) and San Vicente (Serrapio). The Acts of the Council of Oviedo (year 1115) register the attendance of the representatives of Aller, proof of the integration of the borough as an administrative demarcation, consolidated with the foundation of the Puebla or Village of Aller.

During the Late Middle Ages, Aller formed part of the Asturian demesne of Count Don Alfonso and the Quiñónez family was the most important in the borough until being displaced (in the 15th century) by that of Bernaldo de Quirós.

From the end of the 15th century, Aller boasted its own jurisdiction with the capital in Collanzo until 1869, the year in which Cabañaqinta became the capital. In 1808, the people of Aller declared war on the French in the field of Miravalles.

During the 19th century, the borough underwent change from a rural to an industrial economy, and in particular from 1892, when the Sociedad Hullera Española (Spanish Coal Company) started mining the Aller Coalfield.

At the beginning of the last century, two important events took place: the road reached the mountain pass of San Isidro and the Vasco-Asturian Railway reached Collanzo. Currently, the coal-mining crisis, the survival of small crop and livestock farms and the upsurge in the service sector mark the day-to-day reality of Aller.