Ермаков - map search
Topographic map q35_36 of scale 1:1 000 000
Russian - Soviet military - 5Mb -
Topographic map l37-2 of scale 1:500 000
Russian - Soviet military - 1986 - 3Mb -
Topographic map nl37-03 of scale 1:250 000
English - US military - 1956 - 5Mb -