"Dravidian Languages in India"; y-DNA Haplogroup T is also found amongst Dravidian people. They share genetic similarities to those East African groups which carry the y-DNA T genes. Hindu Kush & African Kush are ‘cousins’ to each other.
Just like years ago I realised that Japanese and Tamil words were interchangeable in a sentence. So I went looking for research where others may have found this too. I came across this: Perhaps most similar to Australian languages are the Dravidian languages of southern India.
Area where Dravidian languages are spoken BishkekRocks - Base map template: demis. Sorce for map data: Language families and branches, languages and dialects in A Historical Atlas of South Asia, Oxford University Press.