La Spezia–Rimini Line
In the Romance linguistics, the La Spezia–Rimini Line, also known as the Massa–Senigallia Line, is a line that demarcates a number of important isoglosses that distinguish Romance languages south and east of the line from Romance languages north and west of it. The line divides northern and central Italy, running approximately between the cities of La Spezia and Rimini (or, according to some linguists, between Massa and Senigallia, which lie about 40 kilometres further to the south).