Dahaneye shahr tunnel (city orifice) is one of the three main tunnels which channeled the water from behind the Gargar Bridge-Dam into the water mill and then run several water mills. Seh koreh canal channels the water from behind the GarGar bridge into the western side.
In the water mills and water falls, we can see a perfect model of haltering to run mills.The Band-e Kaisar (“Caesar’s dam”), an approximately 500-metre (1,600 ft) long Roman weir across the Karun, was the key structure of the complex which, along with the Mizan Dam (Band-e Mizan), retained and diverted river water into the irrigation canals in the area.
