Saturnia Hot Springs

The Terme di Saturnia are a group of springs located in the municipality of Manciano in Italy, a few kilometers from the village of Saturnia. The springs that feed the baths, which are found in the south-eastern valley, cover a vast territory that stretches from Mount Amiata and the hills of Fiora and Albegna rivers to the Maremma grossetana at Roselle and Talamone.

Source: Wikipedia