[1] The impressive archaeological remains lie near the modern frazione or village of Roselle (Italian: [roˈzɛlle]) in the comune of Grosseto.

The remains of the ancient buildings were brought to light by means of a long campaign of excavations carried out under archaeologist Clelia Laviosa beginning in the 1950s.

Excavations have revealed the newly identified Roman port on the Ombrone River, located within the Maremma National Park.

The port is associated with a temple dedicated to Diana Umbronesis, set on a rocky promontory to the south, which acted as a ‘marker’ for the coastal trade in the area.

[4] The discovery of Attic vases with red figures testifies to the city's commercial contacts with Greece and the Greek colonies of Southern Italy.

The walls of opus reticulatum date from the early 1st century AD confirmed by the discovery of "sealed" Arretine ceramic.

Inside the arena along the major axis, four stones aligned with regularly spaced holes were discovered that were probably used to divide with stage scenery.

Other changes affected the position of the columns and fountain peristyle, while the small laconicum was adorned with stucco decorations in high relief.

The workshop of a locksmith produced thick layers of ash, coal and waste disposed on almost all floors, blackened by metallurgical activity.

On the southern part of the site, close to the mosaics of the domus, are the archaeological remains of the ancient Roman headquarters of the Augustales (an Augusteum), which was built in the imperial period (1st century AD).