What is "dibaj"

Dibaj (, also Romanized as Dibadj; formerly known as Qal‘eh (Persian: قلعه), Chahārdeh, Chārdeh, and Chehārdeh) is a city in the Central District of Damghan County, Semnan Province, Iran. At the 2006 census, its population was 2,504, in 680 families.

Dibaj is located north of Damghan, in the heart of the Alborz mountains. It is situated along the Mazandaran road, and is the main town in northern Damghan County. It was formerly named Chahardeh, a set of villages which was elevated to township status in 1995.