Very interesting stuff Erik, and what a brilliant creation they have made. What is astonishing is the size of the delta system; its almost like the whole country of Holland is fortified from the surrounding water. That certainly is one of the greatest engineering projects ever accomplished, and I can see some places here in the US have such protection in the future, especially since the climate seems to be changing dramatically. If I was the lead engineer of the project I would have probably opted to build dams through the barrier islands of the country, all the way North of Groningen. That would have been more expensive, however, it might be more efficient, protecting more of the country from erosion. I like the setup West of Rotterdam and Breda though.