The very beautiful natural and historical complex of the Kal Sardar valley is one of the sights of Tabas and is located 25 kilometers east of Tabas and in the heart of the Shatri mountain range. The access road to this valley is paved and passes by the lake of the Nahrin Dam and inside the tourist village of Khoro, which itself is a spectacular complex. The length of the valley is to walk on the washed sands and along the shallow stream of hot and cold water (at the same time) and through two beautiful high sand walls.