This hill lies at a distance of 3 km. east of Semnan city. The remnants here are located in a huge mound in the north east of the current Nasar. It is apparent that the former city was demolished in invasions, and the present village of Nasar has come up on these ruins. In the excavations made, a number of articles have been discovered.

 The forests areas of the province are the natural forests located in the northern fringes which are the continuation of the mountainous forests of the Alborz mountains, the juniper forests on the southern skirts of the Alborz range with tall and dense trees, the desert forests situated in the vicinity of Chah Jam and Khar Tooran with tamarisk trees. Artificial forests that come under the category of parks alongside the cities. In addition to which the entrance and exit routes of the province have also been manually planted for about 160 km.
The most important parks in Semnan are, the Forest Parks of Sookan, Komesh and Mahalat in Semnan , the Forest Parks of Garmsar, Damqan and Shahrood.
The major portion of Semnan province is in the desert area. The Kahak Desert, south of Garmsar and the Haj Ali Qoli Desert, south of Damqan can be quoted as good examples worth visiting.

This mosque can be said to be one of the ancient mosques of the Islamic period, known to preserve and uphold its Sassanide characteristics. The structure is related to the 2nd century AH. and the architecture of the said is an intermingling of the Arab-Islamic and Sassanide modes. It has an inner courtyard which is almost square in shape and considerably large. Surrounding this are porticos with brick laid barrel-shaped ceilings, founded on thick, rounded pillars. One of these porticos being wider than the rest, has an altar behind its wall, with a pulpit alongside. This structure in general has been constructed of sun baked bricks and a minor portion by brick and wood.