Around 1000 years ago, the territory of modern Baku and Absheron was savanna with rich flora and fauna. Traces of human settlement go back to the Stone Age. From the Bronze Age there have been rock carvings discovered near Bayil, and a bronze figure of a small fish discovered in the territory of the Old City. This have led some to suggest the existence of a Bronze Age settlement within the city's territory. Near Nardaran in a place called Umid Gaya, a prehistoric observatory was discovered, where on the rock the images of sun and various constellations are carved together with a primitive astronomic table. Further archeological excavations revealed various prehistoric settlements, native temples, statues and other artifacts within the territory of the modern city and around it.