G-Cans Project

These are photos of Tokyo's massive underground flood control system. It consists of five underground containment silos that are over 213 feet tall and 104 feet in diameter, connected by almost 4 miles of tunnels buried 164 feet below the ground. There's also a large underground water tank that's 83 feet tall, 581 feet long, and 256 feet wide! The roof of this massive chamber is supported by 59 massive pillars.

Water is pumped from these chambers into the harbor via two turbine pumps powered by the same jet engines on the 737. These engines generate 14,000 hp each and can move 200 TONS of water per SECOND!! That's almost 48,000 gallons of water per SECOND! That means in the time it takes you to read this sentence those pumps could've moved over 100,000 gallons of water! That is simply incredible. Here are the photos in no particular order.