a narrow canyon with a tunnel in the middle of it

This dam is one of the great examples of Iranian creativity at a time when there was not much technology. This dam is amazingly built between two high walls and every tourist is recommended to visit it. It is said that this dam dates back to the Safavid era and its main task is to control the upstream floods to reach their downstream with less and controlled flow. In this way, low-risk floods pass freely under the arch. But in larger floods, some of the flood volume is stored behind the dam and will slowly pass through. In this way, for hundreds of years, the Abbasi Dam has protected the downs