A rhyton from Marlik Hill (1000 BC)
The archaeology is generally assumed to have belonged to a people group who spoke an Iranian language and who migrated into Iran from Central Asia in early to mid-2nd millennium BCE. The abundance of arms, horse-trappings (as well as horse burials), and spouted vessels among the grave goods has been cited as distinct Iranian signatures (Kurochkin). The exact attribution of these people, however, remains largely a conjecture.