evidence: The 500 Km road from Ambala to Kaurik is also Known as National Highway No. 22. It passes through the foothills of Shivalik Ranges, Shimla, Kingal and then runs along the river Satluj and thereafter passes through Rampur, Poari, and Pooh. From Khab to Sumdo, the road runs along the river Spiti. From Kalka to Wangtu, the 335 Km stretch is under the control of Himachal Pradesh Public Works Department. While from Wangtu to Korik, it is under the Border Roads Organisation. [...] About 569 km from Delhi and 28 km from Sangla, the village Chitkul in Kinnaur district of Himachal Pradesh is the last inhabited village on this road on the Indo-Tibet border.