In Catalhoyuk cultural layers were left untouched by later by buildings or plowing. Taking off layer after layer, the archaeologists could slowly go back in time. And soon, a very important discovery was made in Turkey: Scientists have found the oldest well-sculpted clay vessels, burned in the fire. And it was a real revolution in the history of mankind. These vessels were covered with glaze and even ornaments. But the potter's wheel of the first inhabitants of the city did not know. Why is this so important? The fact that the pottery found in Egypt, even the oldest, have made very carefully, on the potter's wheel. Obviously for them is an ancient tradition, the school and skill. But the first classes of the school of mankind took place in Jericho and Catalhoyuk.