All of Moscow is building the metro/the tube!

This image depicts a poster featuring a man in a work uniform. The poster is predominantly red in color and includes a drawing of a man with a moustache and a hat. Surrounding the central figure are several other individuals and the settings are that of an underground metro stations. The poster also includes text in Russian, which translates to "ALL MOSCOW IS BUILDING METRO LENIN''S MOUNTAINS KEY for WE GIVE THE 7TH ANNIVERSARY OF THE OCTOBER REVOLUTION MEASURE LINE THE BEST METRO IN THE WORLD." The overall composition suggests a propaganda or promotional piece, possibly related to the metro system of Moscow.