This mosque is located in Robat-e-Ziarat City around Torbat Heydarieh and in southern part of Khoarsan Razavi Province. It is also 44km far from Khaf City. Its history backs to Seljuk era. The only undamaged part of the mosque is the shabestan with 15m*405m dimesnsion. There is a balcony beside of this shabestan which its vent width is ten meters. This balcony is located in the west side of the complex which a mehrab within its inscription are placed in this balcony and it connects to the rectangular shabestan by two gates. There is another mehrab in western side of the shabestan which a menbar (pulpit) with stone steers is placed beside of this mehrab. The eastern wall of the shabestan is remained undamaged. Among this wall, a brick inscription is discovered which its length is more than three meters. Width of the wall is around one meter and the used materials for constructing of this building are rock flour for base and ordered stones for its exterior design. According to studies, the building could be built in 5th Hijri Century.