During construction work in a city of central France, archaeologists uncovered a tunnel opening and found a system of ancient Roman passageways. Photos show what remains of the underground structures.

Covered trenches and tunnels are also less disruptive to life ... Pressurized pipe (inverted siphon) When faced with a deep valley, Roman engineers should use pressurized pipes that are inverted ...

According to the Yale University Art Gallery, "the painted decoration reflects Roman iconography of victory ... including the scutum — in a tunnel under a fortification tower.

The tunnel was repeatedly visited and maintained ... The ST continued to be used throughout the Roman and Byzantine periods before it was abandoned. Besides ancient looting, the only evidence ...