Zadracarta
Zadracarta is a name recorded by Greek historians referring to the largest city of Hyrcania during Achaemenid period. The city was a fortified royal residence.
The precise location of Zadracarta is uncertain. Some identify it with city of Sari. However, according to Encyclopedia Iranica, identification with Khandan Castle on the southwest corner of Gorgan is more probable. The latter is a large tepe of in area and about in height.