Conjunto Etnográfico de Mazonovo

Conjunto Etnográfico de Mazonovo is an ethnographic site in Santa Eulalia de Oscos, western Asturias — a former forge with a hydraulic hammer (mazo) that still runs on river power today.

What is this place?

Mazonovo is a small riverside settlement known for its 18th-century water-powered forge. At the heart of the site stands a hydraulic trip hammer, one of the last of its kind still working anywhere in Europe. Water stored in a wooden pond, known locally as the banzado, drives a mechanism that swings hammers weighing over 500 kilograms, once used to flatten and shape red-hot iron. The wooden banzado at Mazonovo is the only surviving example of its kind in Asturias — elsewhere these ponds were rebuilt in stone or concrete over time.

The forge was once part of a thriving iron industry in the Los Oscos region. During the 18th century, workshops here produced nails for shipbuilding and agricultural tools, fuelling the local economy and drawing new settlers to the valley. The forge building is split into two areas: one housing the hammer itself, the other holding the bellows (barquines) and the furnace where the metal was heated before being worked.

After a long period of disuse, the complex was fully restored, bringing the old machinery back into working order. Since 2006, the site has been cared for by Friedrich "Fritz" Bramsteidl, a blacksmith descended from a long line of Austrian craftsmen, who settled in Mazonovo and reopened the forge to visitors.

How do you get there?

Mazonovo lies within the municipality of Santa Eulalia de Oscos, in the heart of the Los Oscos region, close to the border between Asturias and Galicia. A local road running through the river valley leads to the site, passing through the steep slopes, woodland and scattered hamlets typical of the area. Travelling by car is by far the easiest option; Vegadeo and Castropol are the nearest larger towns, with roads leading inland to the Oscos valleys.

What will you see?

A visit centres on the forge itself and its working hydraulic hammer — during a demonstration you can watch the force of the water drive a multi-tonne mechanism while the smith shapes glowing iron by hand. Beyond the hammer, visitors can see the bellows, the forge furnace and the wooden reservoir that feeds the whole system with water. It's a rare chance to see, in action, a technology that once powered the local economy for centuries and has all but disappeared elsewhere in Europe.

For those interested in the craft, blacksmithing courses are organised periodically, usually run as weekend workshops with a small number of places and hands-on, personalised instruction from the site's caretaker.

When should you visit?

Spring and summer are usually the best times to visit, when river flow tends to be more consistent and the Oscos valley looks its greenest and most scenic. It's worth checking opening hours and demonstration availability in advance, since the hammer's operation depends on water levels and the caretaker's schedule. In autumn and winter, when water levels drop, hammer demonstrations may be more limited.

Frequently Asked Questions

What is the "mazo" at Mazonovo? It's a hydraulic trip hammer — a heavy iron-forging tool driven by river water, in use since the 18th century to shape and flatten iron. Mazonovo is one of the few places in Europe where such a mechanism is still operational.

Is the ethnographic site open all year round? It generally is, but it's worth checking current hours and demonstration times beforehand, since the hammer's operation depends on the river's water level and the caretaker's schedule.

Who looks after the forge today? Since 2006 the site has been run by Friedrich "Fritz" Bramsteidl, a blacksmith from an Austrian family with a long forging tradition, who settled in Mazonovo.

What else is there to see nearby? The Los Oscos region is known for its blacksmithing heritage, with several other historic forges and water mills, as well as scenic villages and trails through the green valleys along the Asturias-Galicia border.