The bridge overlooks the Esarulo river whose waters were used for the mills. In the 1400s and 1500s, along its course there were ironworking workshops that used hydraulic power to move the "mallet", a heavy hammer to strike the iron.
In times of flood, the inhabitants flocked in large numbers along the river to take the trunks or tree logs carried by the waters. They used sticks with hooks to bring them closer to the shore and to those who could not catch immediately, they threw stones on them. Then , they returned at a later time to collect the timber stopped by the stones that they considered already owned.
It is a very suggestive, restful and refreshing place as the river is suitable for swimming! A nice break during the excursion to Castiglione in Garfagnana, on a hot August afternoon.