Aqueduc romain de Vieu

The Aqueduc romain de Vieu is an underground water channel built by Roman engineers that runs through bedrock between Champagne-en-Valromey and Vieu. The tunnel demonstrates how the Romans moved water across distances using gravity and carefully designed stone passages carved into the landscape.

The structure was built during the second half of the 2nd century and supplied water to the region for many centuries. It continued to serve local water needs until the late 19th century when it gradually fell out of use.

The deep inspection shafts and diverticuli demonstrate Roman technical expertise in hydraulic architecture within the Auvergne-Rhône-Alpes region.

Access is available through Route de Vaux in Valromey-sur-Séran, though some areas remain restricted to protect the stone structure. Wear sturdy shoes since the ground is uneven and parts of the site can be damp.

Water flowed through a narrow, carefully carved channel with service walkways built alongside for repairs and maintenance. This reveals how Roman engineers planned for future access within their underground infrastructure.