Caspian Sea and a Pleistocene stage, that includes glaciation cycles and the creation of the present Volga River. During the first stage, the Tethys Sea had evolved into the Sarmatian Lake, that was created from the modern Black Sea and south Caspian, when the collision of the Arabian peninsula with Western Asia pushed up the Kopet Dag and Caucasus Mountains, setting definitive south and west boundaries to the Caspian basin. This orogeneic movement was continuous throughout the years, while Caspian was regularly disconnecting from the Black Sea. In the late Pontian, a mountain arch rose across the south basin and divided it
Svinoy, Caspian Sea 1669. The southern bay of the island is an ideal place for underwater archaeology. Svinoy, Caspian Sea Svinoy, Sangi-Mugan Island or Muğan daşı (, Russian: "Ostrov Svinoy"), is an island in the Caspian Sea located south of Baku, Azerbaijan. This island lies south of the Baku Archipelago, 16 km off the shore. Svinoy is about 1 km in length and 0.6 km wide. Although geographically quite far from Baku, This island is considered part of the Baku Archipelago. On Svinoy Island, there is an automatic station for the monitoring of local water pollution. Stenka Razin's Cossacks crushed the fleet of