in the area south of the military demarcation line, which cuts across our country at its waist, there is a concrete wall which [...] stretches more than from east to west, is high, thick at the bottom, and wide in the upper part. it is set with wire entanglements and dotted with gun embrasures, look-outs and varieties of military establishments [...] the south korean rulers built this wall over a period of many years from 1977.