(200-400 AD) in coastal areas. It is also the only inland tomb corresponding to the coastal burial tradition at that time. During the Vendel Period, cemeteries became more common in the Sastamala area, which contributes to population growth and population density. The parish of Sastamala was the largest parish belonging to the historical province of Satakunta.

The name Sastamala first appeared in the form Sastamall in a letter from King Birger Magnusson