Khosk River Lut valley is located in Kerman province and 2 km from Shahdad city in Nehbandan. Cal Shore is the only permanent Lut River. At the same time, other mudflows spill over into the salt-crater area of ​​the Lot salt, the most important of which is the Kheskud River or the Dry River. This basil does not have permanent water, but is the seasonal crossing point of the northern Lut River. Three parallel mosses with steep slopes from north to south pour salt into the pits, each with new or ancient names, including Tang Amir (reminiscent of Amir Talibi Gul) and Tang Rattil. Research from this basin shows that the dry bed of this basin extends up to the upper basin and slightly up to the old habitat. In addition to absorbing the waters of the Badok Mountains, it also accounts for most of the northeast waters of the Badok Mountains to Anbar, as well as much of the northeast central Lut River.

These tributaries, known as the upper or northern arid rivers after the narrow Amir crater, form the eastern, western, middle, and western rifts from east to west. Parallel rivers are the most important and largest in North Lot, with distances laterally narrowed into a single crater and producing low or southern rivers. In the event of heavy thunderstorms, runoff flows from the eastern highlands of northern Lut, from Mount Kollum to Mount Abdulahi, as well as the plains of those areas to the central Lut Hole. At the entrance to the upper dry river, due to the difference of the floor surface of this wetland with the east of Saraghab Mountain plain, due to erosion of wetland waters, on the sides of dryland the trenches have created trenches about 5 meters high and have given special attraction to that area. Is.

Vertical erosion of sediment has affected sedimentary classes of varying hardness and has created sheltered systems and scattered sedimentary blocks. Which is in the form of city ruins known as the city of Lut. This area is typical of this area and has not been developed in other parts of Lut. 2 kilometers south of Cal Corner, the dry valley is spread out in a claw shape and is about 2 meters high.