Far in the northwest corner of Italy, in the town of Antey-Saint-André, an ancient, little-known aqueduct hugs the hillside. Dating back to the ninth century, the medieval aqueduct, known as Ru Du Pan Perdu, was originally built as an irrigation canal. The structure would collect water falling from mountainside streams and funnel it to the agricultural land below. The name Ru Du Pan Perdu literally means “channels of lost bread” and indicates that the laborers who built the aqueduct were likely never paid for their work and therefore did not complete…