Next to the first weir on the Flumendosa, the river with the highest flow rate in Sardinia, there is a large lake reflecting shades of blue, surrounded by archaeological legacies, ‘ghost’ villages and breathtaking landscapes. Bau Muggeris was originally the name of a gorge, where, according to tradition, the muggeris, meaning the women of the village of Villagrande Strisaili – in the area of which the reservoir is located - went to do their household washing. Today, it is the name of a dam, which was built, and of the artificial basin that emerged following its construction, which took place between 1928 and 1949. The first construction projects date back to 1915 but, shortly after the work began, it came to a sudden halt, when funds were redirected towards coal mining in Sulcis. Three power stations were built downstream, exactly at the ‘cascades’ in the river, which could produce up to 130 million kilowatts/hour at full capacity, equal to about one third of the electricity produced in the entire Italian peninsula in mid-20th century.