M50-089 The 2018 main survey area. Lake Khar, cluster 27.
M50-090 Most eastern section of the wall in Mongolia. Border with China.
M50-088 West of 2018 main survey area.
M50-099 Cluster 24 Survey area 2019
M50-100 to the east of 2019 survey area
M50-101 South of 2018 survey area.
M49-128 The most western marked wall on maps.
M49-127 The most western section of the wall but no wall marked on this map.
Great walls of China map, 2008, by Maximilian Dörrbecker (JPG)
Soviet maps symbols explained (PDF)
Wall survey - map index of Soviet military maps, scale 1:100,000
Cyrillic alphabet.