Cascate del Mulino โ€” hot spring
Raimond Spekking ยท CC BY-SA 4.0

Cascate del Mulino

  • 2 min read
  • 42.648ยฐ N 11.513ยฐ E

Interesting facts

  • The warm water is home to tiny red worms, the larvae of non-biting midges, whose colour comes from a haemoglobin-like protein suited to oxygen-poor sulphurous water.
  • The spring's flow is strong enough to replace the water in the main source pool roughly every four hours, about six times a day.
  • Underground, carbon dioxide in the water dissolves marl and travertine at depths of around 200 metres, releasing the sulphur, calcium and magnesium it carries.
  • The papal bull of 1188 was issued by Pope Clement III to the canons of Sovana, and it listed the baths among the diocese's landholdings.
  • By 1216 the baths had passed to the Aldobrandeschi counts, and in the early 14th century Siena, Orvieto and rival noble families fought over Saturnia.
  • In 1572 the baths were put back into use as part of a large land drainage scheme in the surrounding countryside.
  • The Ciacci family built the first proper spa hotel in 1919, and the University of Pisa made the first modern chemical analysis of the water a year later.
  • The village above the falls stands on a travertine plateau at 294 metres above sea level.
  • A colony of Roman citizens was settled at Saturnia in 183 BC, and around 1300 the town was razed by the Sienese.

Why it is worth it

Below the hill village of Saturnia in southern Tuscany, warm water spills over a low ledge beside an old mill and runs down a staircase of pale, rounded pools. The basins were built by the water itself: as the mineral-rich spring water flows and evaporates, it leaves behind calcareous rock that forms terraced rims, and the pools take on a milky blue-white colour against the green Maremma countryside. The Cascate del Mulino, the Mill Falls, are the most famous of Saturnia's thermal cascades and are an open stretch of hillside where people come to sit in the warm water.

The water comes from a sulphurous spring that rises nearby at a constant temperature of about 37.5 ยฐC, with a flow of close to 800 litres per second. According to the spa's own account, the water spends decades underground on its way from the Monte Amiata area, dissolving minerals from limestone and travertine before it surfaces. By the time it reaches the falls downstream it has cooled somewhat. A legend explains the name: Saturn, weary of humanity's endless wars, hurled a thunderbolt at the earth and opened a crater from which a warm spring flowed to calm mankind and bring back a golden age.

People have bathed here since Etruscan and Roman times. The ancient town of Saturnia, once called Aurinia, lay on the Roman road known as the Via Clodia, and a papal bull of 1188 already lists the "Baths of Saturnia" together with lodgings for travellers and bathers and a mill below the springs, fed by the same water โ€“ the forerunner of the mill that gives the falls their name. The site later fell into neglect, was brought back into use in the 16th century and was drained and developed into a modern spa from the late 19th century. The village above keeps stretches of polygonal ancient walls, a Roman gate and an Aldobrandeschi fortress.

Getting there

The falls lie at Follonata, about 2 km south of the village of Saturnia in the municipality of Manciano, province of Grosseto, beside the provincial road SP10. Grosseto is about 35 km away in a straight line and some 56 km by road. The nearest airport is Perugia San Francesco d'Assisi โ€“ Umbria International Airport (PEG), about 96 km away in a straight line; Rome is about 115 km from Saturnia.

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42.64817, 11.51286per Wikidata