The massive underground cathedral of the G-Cans water collection system, Tokyo, JapanKeywords:Japan, 日本, Japon, Tokyo, G-cans, 龍Q館, Ryu-Q-Can, 首都圏外郭放水路の龍Q館, concrete, water tank, flood prevention, wall, underground, interior, 地下 Back to G-Cans (首都圏外郭放水路の龍Q館) | Nov 13, 2010 50 mm, 13s, f/14 AF 50mm f/1.4 D Location | |