Caspian Sea the east often changed course to empty into the Caspian through a now-desiccated riverbed called the Uzboy River, as did the Syr Darya farther north. The Caspian also has several small islands; they are primarily located in the north and have a collective land area of roughly . Adjacent to the North Caspian is the Caspian Depression, a low-lying region below sea level. The Central Asian steppes stretch across the northeast coast, while the Caucasus mountains hug the western shore. The biomes to both the north and east are characterized by cold, continental deserts. Conversely, the climate to the southwest
Black Sea–Caspian Steppe may have been proto-Chechen. Iron appeared in the eighth century BC. The small western area around the Taman peninsula had a distinct history since it was in contact with the literate civilizations of the Mediterranean basin. From the eighth century Greeks founded colonies around the Black Sea and we begin to have written reports. Maeotians was the Greek name for the peoples around the Sea of Azov. The Hellenized Sindi people appeared with a possible capital or seaport at Anapa. Both were perhaps ancestors of the Circassians. The Greek colonies exported grain and slaves to Byzantium and beyond – a