La macina dei cereali ad acqua del Mulino di Pontuglia. Come si faceva la farina.

An ancient water-powered mill dedicated to grinding wheat, in Pontuglia, Valnerina, Umbria, Italy. The video shows how the water wheel, the upper millstone, the hopper, and the system for separating flour from bran worked. It also explains why flour mills were often covered with wood or cloth, due to the risk of explosion caused by flour dispersed in the air.