The Zas – Rial de Abaixo route starts in front of the Town Hall and takes us at first to the parish church of San Andrés, commissioned to be built in the sixteenth century by Álvaro Núñez de Lamas. The temple, with subsequent reforms, is one of the most important heritage pieces of the municipality.
The path continues towards the river, where you can make a small detour to visit two mills: the Muiño do Río, still in operation, and the Muiño de Urdilde, dated 1839 and now abandoned. These ethnographic elements testify to the harnessing of the power of water over generations.
One of the most emblematic stops is the Carballeira de Zas, known for hosting the folk festival every summer that brings together thousands of people. According to legend, in Monte Castro the Moors hid a cursed treasure, and the festival was born as a tribute to the spirits of that mountain.
The final stretch runs through the village of A Devesa and ends in Rial de Abaixo, after passing through an old power plant. It is a route full of contrasts, combining tradition, nature and mythology in a single route.