Ключевые слова: area, background, barbed, barbed wire, barricade, barrier, border, camp, closed, copy, danger, defense, district, emigration and immigration, fence, forbidden, fort, freedom, illegal, industrial, international border barrier, isolated, korea, law, metal, metallic, no people, order, outside, prison, private, protection, restricted, restricted area, safety, secure, selective focus, separation, sharp, space, steel, surrounding wall, symbol, wire,