Vallée de l'Ombrone, River valley in Tuscany, Italy

The Ombrone Valley is the basin of the Ombrone River in the province of Grosseto, Tuscany. The river crosses the southern Chianti hills and the Crete Senesi, then flows past Civitella Paganico, Cinigiano, Campagnatico and Grosseto before reaching the Tyrrhenian Sea at Bocca d'Ombrone. The landscape alternates river vegetation, Mediterranean scrub on south-facing slopes, and open fields where cypresses and, near Grosseto, cork oaks line the roads and mark property boundaries.

The valley served as a crucial link between inland regions and Mediterranean trade routes during Etruscan times. This strategic position shaped settlement patterns and cultural exchange throughout the area for centuries afterward.

The local communities use traditional chestnut groves as part of their identity and daily life. This nut production shapes the food people eat and the festivals they celebrate throughout the year.

Numerous hiking trails wind through the valley, connecting medieval villages and following the river course. Access is straightforward, but visitors should be prepared for varied terrain and seasonal water levels along the paths.

The Terme di Petriolo sit on the Farma stream, which marks the border between the provinces of Grosseto and Siena. Bathers can use the springs freely along the stream bed or through the equipped facilities beside it. The site lies within the Ombrone valley, not in southern Italy.