Chosun 7/21/2006 (not sure of year) Mammoth Underground Square and Road in Pyongyang The Pyongyang subway has two generally-unknown facilities: a mammoth “underground square” in preparation against war, and an “underground road” between the subway stations, linking the Mount Kumsu Memorial Palace and the Sunan Airport in the suburbs of Pyongyang. The underground square, built … Continue reading Underground backup command center under Taesong