Tabriz (, ), is the most populated city in the Iranian Azerbaijan, one of the historical capitals of Iran, and the present capital of East Azerbaijan Province. Located in the Quru River valley between the long ridge of the volcanic cones of the Sahand and Eynali mountains, Tabriz' elevation range between 1,350 and 1,600 meters above sea level. The valley opens up into a plain that gently slopes down to the eastern shores of Lake Urmia, to the west. With cold winters and temperate summers, the city is considered a summer resort.