It's not really clear. There are pockets of Dravidians outside of the 'Dravidian south', but in some cases these seem to represent later migrations. And in Sri

It's not really clear. There are pockets of Dravidians outside of the 'Dravidian south', but in some cases these seem to represent later migrations. And in Sri Lanka both Indo-Aryan (Sinhala) and Dravidian (Tamil) speakers seemed to have arrived around the same time.