Why was obsididian important to the p e ople of catalhiyuk

The site of Jericho rises above the wide plain of the Jordan Valley, its height the result of layer upon layer of human habitation, a formation called a Tell. The earliest visitors to the site who left remains (stone tools) came in the Mesolithic period (around 9000 B. C. E.) but the first settlement at the site, around the Ein as-Sultan spring, dates to the early Neolithic era, and these people, who built homes, grew plants, and kept animals, were among the earliest to do such anywhere in the world. Specifically, in the Pre-Pottery Neolithic A levels at Jericho (8500-7000 B. C. E.) archaeologists found remains of a very large settlement of circular homes made with mud brick and topped with domed roofs.

As the name of this era implies, these early people at Jericho had not yet figured out how to make pottery, but they made vessels out of stone, wove cloth and for tools were trading for a particularly useful kind of stone, obsidian, from as far away as Çiftlik, in eastern Turkey. The settlement grew quickly and, for reasons unknown, the inhabitants soon constructed a substantial stone wall and exterior ditch around their town, complete with a stone tower almost eight meters high, set against the inner side of the wall. Theories as to the function of this wall range from military defense to keeping out animal predators to even combating the natural rising of the level of the ground surrounding the settlement. However, regardless of its original use, here we have the first version of the walls Joshua so ably conquered some six thousand years later.