Resolution: 1/3 - Click the region of interest for enlargement.
Image rights
Qanat Niavaran in Iran. A Kariz surfacing in Niavaran, Tehran. It is used for watering the grounds of The National Library of Iran. Date: 16 December 2005 (original upload date). Author: Zereshk at English Wikipedia. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.