Thank you for supporting us with a donation!

Civil engineers from Delft have always been world famous for controlling the course and flow rate of rivers. In IJmuiden, the biggest sea lock in the world is being built with a length of 500 meters. As a reward, you will get a miniature version of ‘Share Knowledge Like Rivers Flow’. Of course you will also receive previous rewards.



We need your address to send you the reward.






Your privacy is guaranteed. Read more