Ataol-Molk Joveini writes in Tarikhe Jahangosha [history of conquerors]: “The most developed and greatest castle among 70 castles in south of Ghohestan is located in 5th km of south-west of Ferdows. The castle is limited to a dreadful precipice in three sides. The only way to access castle is through a strait in south-west of mountain (with lower slope). Towers have 5 meters height and are built of rubbles and plaster mortar. When was thriving, the castle had two labyrinthine walls and rampart and some garrets and the area of the final wall was about 1000 meters. The walls do not have geometrically regular surface. At the final part, water reservoirs are excavated deep in the rocks with 10 meters length and about 2 meters width. Water reservoirs were filled by rain and snow and were a help for people when they were surrounded. Reservoirs have not been the only water resource for residents of castle because they had dug a well at the bottom of south wall of castle known as Chahe Ghonoot (well of prayer) today. There are effects of a small cylindrical tower on the ridge of mountain maybe related to turn fire or to espial. Obviously, the castle had been adjacent over neighboring plains and old commercial roads in ancient times especially road of caravans in plain of Toon.