The Specchio di Venere is a basin formed in a depression due to the presence of an old volcanic caldera. The waters of the Specchio di Venere are rich in soda and therefore famous for their skin-care properties.
Along the lake, you will also findmud baths that can be used for the body and face. The springs reach a temperature of around 40°. The area is characterised by the presence of herons along the shores and a widespread smell of sulphur.