Santorini is thought to be one of the possible locations for Atlantis.
This is likely because historians have noticed the Minoan settlement of Akrotiri, discovered on the island of Santorini, was a developed settlement that was destroyed around 1,500 BC due to the strong eruption of the Santorini volcano matching the myth of Plato.
South Italy is the southern boot region of Italy, though there are two different interpretations of what South Italy is. According to the EU parliament constituency, there are 6 regions in South Italy. This starts from Abruzzo on the East Coast and on the West, this is from Campania downwards to Calabria.