To find out more about the history of Roselle and Vetulonia, you must make a stop at the MAAM, the Maremma Museum of Archaeology and Art, located in the historical centre of Grosseto, where the visitor can find items and places from Ancient Maremma.
The ground floor of the museum is completely dedicated to Roselle, documented in every phase of its long life (Etruscan, Roman and Medieval periods) It is possible to see: the warriors’ stele (mid 6th century BC) from the Archaic period necropolises; two important statues from the Roman forum, one connected with imperial worship (mid 1st century AD) and the other to an important local family, the Bassi (end of 1st-start of 2nd century AD), and finally from the dig of the first paleo-Christian church, built on the ruins of Hadrian's Baths, some Carolingian architectural decorations.
The last stage of Roselle's life were affected by a heavy reduction in the population, mostly due to Innocent II’s decision to move the bishop's cathedral to nearby Grosseto in 1138. This event meant that the city was increasingly abandoned and there was an exponential growth of the new “civitas”. It was thanks to this transfer that Grosseto eventually achieved the title of “city”.
The first floor houses the archaeological testimonies from the Maremma. Here we find the Euboic Krater from Pescia Romana, attributed to the famous Cesnola Painter (730-710 BC), wonderful orientalising Etruscan trousseau from Vetulonia and Marsiliana, the man of Macchiabuia, a reconstruction of an Etruscan buried body, and urns and anchors that bear witness to Late Archaic Etruscan trade. The narration continues, using items and inscriptions to highlight those changes and innovations that came in the 3rd century BC, the time When the Romans occupied cities such as Roselle, Tarquinia and Vulci.
The room with the reconstruction of the African shipwreck from Giglio Porto (3rd century AD), with its load of urns and much more, is incredibly interesting and stunning. The last part of the route is also enjoyable, where you can see a nineteenth-century Antiquarium dedicated to collections.
for info: https://maam.comune.grosseto.it/