Avestan geography, is the geographical references in the Avesta, which are limited to the regions on the eastern Iranian plateau up to Indo-Iranian border. It was common among the Indo-Iranians to identify concepts or features of traditional cosmography—mountains, lakes, rivers, etc.—with their concrete historical and geographical situation as they migrated and settled in various places.
Conclusion
If we compare the first chapter of the Vidēvdād with the passages of geographical interest that we come across mainly in the great yashts, we can conclude that the geog raphical area of Avesta was marked by Margiana at the northeast, the western boundary being marked by the districts of Arachosia, Drangiana and Bannu = Varəna. The Indus River and locations along it in its central area, and the Panjab marking its eastern frontier. Sogdiana and, possibly, Chorasmia (which, however, is at the extreme limits) mark the boundary to the north, and Sīstān and Balochistan to the south.