Delta Works was completed by the Europoortkering which required the construction of the Maeslantkering in the Nieuwe Waterweg between Maassluis and Hoek van Holland and the Hartelkering in the Hartel Canal near Spijkenisse. The works were declared finished after almost forty years in 1997. In reality the works were finished on 24 August 2010 with the official opening of the last strengthened and raised retaining wall near the city of Harlingen, Netherlands. Due to climate change and relative sea-level rise, the dikes will eventually have to be made higher and wider. This is a long term uphill battle against the sea. The
Invasion of the Sea 1800s. He discovered that large areas of the Sahara Desert were below sea level and proposed that a canal be dug from the Mediterranean Sea to these Saharan basins, which would allow for the creation of an inland "Sahara Sea". Others had made similar proposals at the same time, and canal building generally was a popular geopolitical endeavor of the first decade of the 1900s, when "Invasion of the Sea" was written. Some have noted that the inclusion of the Berber raiders (who are opposed to the efforts of the European engineers and military officers) is a foreshadowing of the