Zardelimeh waterfall is one of the largest waterfalls in Iran, which is located in the west of Chaharmahal and Bakhtiari province and the border of Khuzestan province.
In the east of Kohgiluyeh and Boyer-Ahmad province and in the green foothills of Dena, there is a large area with rich vegetation that remains pristine and untouched due to its impassibility.
Helen is one of the protected areas of Iran that is at the disposal of the Environmental Protection Organization to take care of this valuable ecosystem.