Tbf we have no clue if the Harappa valley civilization was dravidian. I think current consensus edges towards a lost austronesian language rather than a dravidi

Tbf we have no clue if the Harappa valley civilization was dravidian. I think current consensus edges towards a lost austronesian language rather than a dravidian one (albeit certainly coexisting with dravidian cultures), but we'll likely not have good answers without archaeological evidence of cultural comparison (like a rosetta stone)