"The dates (2200–1500 BCE) and location of the Andronovo culture are consistent with the attribution of this culture to the undivided Indo-Iranians. But we will notice that the traces attested today stop in Bactria... No Andronovian burial has yet been found south of the Oxus.... They are very thin: a few shards. It should therefore be assumed that the Indo-Iranians, Proto-Iranians or Proto-Indo-Aryans got rid of this culture just as they entered Iran and India. The hypothesis is possible since, to arrive in these territories, they had necessarily crossed sedentary zones belonging to the Oxus civilization, whose material culture was much superior. The curious thing is that they seem not to have borrowed anything from the latter either. Furthermore, one of the markers of the Scythian civilization and – for the majority of archaeologists – of the p-i-e and i-ir habitat in the 4th and 3rd millennia BC is the existence of tombs covered with a tumulus (known as kurgan/ kurgan)... So in Sintashta. However, this type of burial was considered an abomination both in Vedic India and in Mazdaean Iran. Clearly, it is very difficult to find a marker for the i-ir group."