Gorgeous engineering and photography at the G-CANS site From this description:
The G-Cans Project is a massive project to build infrastructure for preventing overflow of the major rivers and waterways spidering the city. The underground waterway is the largest in the world - with five 32m diameter, 65m deep concrete containment silos which are connected by 64 kilometers of tunnel sitting 50 meters beneath the surface...
PLEASE NOTE: The website is in Japanese. There are arrows for navigating between pictures but the numbers jump around.
Edit the URL to reflect consecutive numbers 00 through 25 -- ie: http://www.g-cans.jp/photo/00.html http://www.g-cans.jp/photo/01.html http://www.g-cans.jp/photo/02.html http://www.g-cans.jp/photo/03.html
