Subterranean safety valve protecting Tokyo metro from flood disaster
After visitors descend stairs winding 50 meters below ground, they emerge to an otherworldly sight -- a cavernous, dimly lit space with towering pillars reminiscent of a temple…
Tomas Kauer - News Moderator 
After visitors descend stairs winding 50 meters below ground, they emerge to an otherworldly sight -- a cavernous, dimly lit space with towering pillars reminiscent of a temple…
