, 1954). The watershed ridge (Map-1 and Map-2), a subrange of 60 km long
Kailash Range, is located on the LAC, west of
Spanggur Tso and east of Chushul Valley. From west to east, has the following features:
Spanggur Gap (4,900 m or 16,100 ft),
Magar Hill, Mukhpari peak (5,545 m or 18,192 ft), Refan Pass (5,144 m or 16,877 ft), Rezang La (5,005 m or 16,420 ft), Rechin Top (5,204 m or 17,073 ft), Rechin La (5,005 m or 16,420 ft), Rezang La II (5,500 m or 18,045 ft). Refan Pass, Rezang La, and Rechin Top are served by the Indian patrol road from the Gualchung Barma campsite. Rechin La and Rezang La II are served by a separate Indian patrol road from the Tsaka La in the south. To the north of Rechin La along the LAC are various strategic hill peaks (Map-2), Mukhpari, Magar Hill, and north of Spanggur Gap is the
Gurung Hill. To the south of Rezang La is
Mount Sajum (6,064 m or 19,895 ft). The confusion about the "Rezang La" ("Rezang La I" or "Rezang La (1962)") and "Rezang La II" arose due to the old 1954 survey map (Map-1) of region by the American Army, which labeled two adjacent valleys leading to the Spanggur Lake as "Rezang Lungpa". The pass at the head of the western valley () at an elevation of is labelled "Rezang La". The pass at the head of the eastern valley (), unlabelled in the survey map [now labelled as the "Rezang La II" in some sources], is at a much higher elevation of . The streams from these two passes (Map-1 and Map-2), which flow into Spanggur Tso, are both named as "Rezang Lungpa" on the American survey map. In 1963, the Government of India used the name "Rezang La" for pass marked on the American survey map, the one at the head of the western valley. References to "Rezang La" ["Rezang La I" or "Rezang La (1962)"] in the literature on 1962
Sino-Indian War in English language, refer to this pass. Chinese sources use the name "Rechin La" for another saddle between the western pass ["Rezang La", "Rezang La I" or "Rezang La (1962)"] and eastern pass ["Rezang La II"], which has also been adopted by the Indian news media in 2020. Rechin La as well as the present Rezang La are mountain passes on the ridge line adjoining the Chushul Valley, which China claims as its border. India's claimed border is further east, and it coincides with the border shown on most British and international maps prior to
Indian independence. The
Line of Actual Control (LAC) resulting from the 1962
Sino-Indian War coincides with the Chinese claim line in this region. The
Chushul village is 27 km northwest of Rezang La. ==Military operations==