Mount Amiata, Mountain peak in southern Tuscany, Italy.

Mount Amiata is a compound lava dome of trachydacite and trachyte in southern Tuscany, reaching 1,738 metres. Its broad, rounded summit and smooth slopes are covered with beech and fir woods, while olive groves and vineyards grow on the lower flanks. A massive viscous trachydacitic lava flow, 5 km long and 4 km wide, extends from beneath the southern base of the Corno de Bellaria dome.

Monte Amiata is a compound lava dome of the Amiata complex volcano, built by viscous trachydacitic lava flows and domes; radiometric dates place a major eruptive episode about 300,000 years ago, with the youngest lavas at roughly 231,000 years. From the 1870s until around 1980 cinnabar was extracted here, and thermal activity with cinnabar mineralization continues at the Bagnore geothermal field.

The mountain gave its name to a whole landscape. The communities on its slopes have relied for centuries on the water and timber from the forests.

Visitors reach the mountain via the SR2 Cassia road, then follow the SP61 toward Abbadia San Salvatore. Several thermal springs are located in the surrounding area.

The mountain's eruptive vents followed a fissure running SSW-NNE, and the resulting domes form today's main summits, among them Corno de Bellaria and Poggio Trauzzolo. A viscous trachydacitic lava flow 5 km long and 4 km wide lies beneath the southern base of the Bellaria dome.