Kalakanta: In Atlanta in 1975 we were on a morning walk with Srila Prabhupada. Someone asked, “Prabhupada, we sometimes go to anthropology departments and they ask, “If the Vedic culture is so ancient, where are the bones? Why are there no remnants from that day and age?” Prabhupada said, “Because they burn the bodies. That’s civilized.” Then he stopped for a moment and with his two hands as claws in a digging motion Prabhupada said, “Anthropologists, just like dogs digging for bones.”
Reference: Remembrances by Sidhanta Das- Folio Vedabase