Big Horn - map search
Topographic map l12-4 of scale 1:500 000
Russian - Soviet military - 14Mb -
Topographic map 069027 of scale 1:250 000
English - US Geological Survey - 1962 - 10Mb -
Topographic map f17 of scale 1:1 000 000
English - US military - 1990 - 15Mb -