Now, the obstacle that arises from the theory of the Medes and the Persians having emigrated from the North ... on the basis of a highly conjectural … - Gherardo Gnoli

[the airyo-Sayana refers to] “the vast region that stretches southward from the Hindukus,” ... “from the southern slopes of the great mountain chains towards the valleys of the rivers that flow south, like the Hilmand…” “there is a substantial uniformity in the geographical horizon between Yt.XIX and Yt.X ... and the same can be said for Vd.I … these Avestan texts which contain in different forms, and for different purposes, items of information that are useful for historical geography give a fairly uniform picture: eastern Iran, with a certain prevalence of the countries reaching upto the southern slopes of the Hindukus.” ...

The main obstacle to a reconstruction that closely links the western Aryas to the Avestan Airyas is, in my opinion, the one arising from the theories that the Medes and the Persians emigrated from the North rather than from the East, that is to say, for instance, from south-east Russia (some scholars connect them with the so-called Andronovo culture) to the region lying North or North-West of the Caspian and across the Caucasus to the Urmia Lake region and, lastly, in an easterly and southeasterly direction towards the Zagros mountains.

The only possible identification of Airyana Vaejah must point to the great Hindukus mountain range.