Qal'eh Kuh of Ferdows
ISMAILI CASTLE IN QUHISTAN
Dokhtar castle (Ferdows); Ghal'eh Kuh of Ferdows; Kuh of Ferdows Castle
Ghal'eh Kuh of Ferdows () is a ruined fortress on top of Kuh-e Ghal'eh (), located south of Ferdows (Tun) in South Khorasan Province, Iran. The fortress was famously used by the Nizari Ismailis of the Alamut period, and was the biggest Nizari stronghold in the Quhistan region, according to the Tarikh-i Jahangushay.