Lāsh-e Juwayn

Lash-e Juwayn takes its name from two neighbouring fortresses on the lower Farah River, northeast of Lake Zereh. Juwayn stood on the road between Zarang, the capital of Sistan, and Farah and Herat. Medieval geographers described it as a Kharijite stronghold, and it appeared in accounts of the campaigns of Hamza ibn Adharak against the governors of Sistan. Floodwaters could transform the surrounding plain into marshland.