off-topic, but to explain
Flood control is an important issue for the
Netherlands, as due to its low elevation, approximately two thirds of its area is vulnerable to flooding, while the country is densely populated. Natural sand dunes and constructed
dikes,
dams, and
floodgates provide defense against
storm surges from the sea
en.wikipedia.org
Hansje Brinkers ..... is a cult figure from Dutch mythology sponsored by the Tourist Board. According to the legend, he saved the nation from drowning in ancient times by sticking his index finger in a hole in the dike until the dike warden and his men came with sandbags.