History
Geography
Culture
The Netherlands is geographically very low relative to sea level and is considered a flat country, with about 26% of its area and 21% of its population located below sea level, and only about 50% of its land exceeding one metre above sea level. The European part of the country is for the most part flat, with the exception of foothills in the far southeast, up to a height of no more than 321 metres, and some low hill ranges in the central parts. Most of the areas below sea level are man-made, caused by peat extraction or achieved through land reclamation. Since the late 16th century, large polder areas are preserved through elaborate drainage systems that include dikes, canals and pumping stations. Nearly 17% of the country's land area is reclaimed from the sea and from lakes.
The Netherlands is bounded by the North Sea to the north and west, Germany to the east, and Belgium to the south. If the Netherlands were to lose the protection of its dunes and dikes, the most densely populated part of the country would be inundated (largely by the sea but also in part by the rivers). This highly developed part of the Netherlands, which generally does not lie higher than about three feet (one metre) above sea level, covers more than half the total area of the country. About half of this area (more than one-fourth of the total area of the country) actually lies below sea level.
The lower area consists mainly of polders, where the landscape not only lies at a very low elevation but is also very flat in appearance. On such land, building is possible only on “rafts,” or after concrete piles, sometimes as long as 65 feet (20 metres), have been driven into the silt layer.
In the other, higher area, the layers of sand and gravel in the eastern part of the country were pushed sideways and upward in some places by ice tongues of the Saale Glacial Stage, forming elongated ridges that may reach a height of more than 330 feet (100 metres) and are the principal feature of the Hoge Park Veluwe National Park. The only part of the country where elevations exceed 350 feet (105 metres) is the border zone of the Ardennes. The Netherlands’ highest point, the Vaalserberg, in the extreme southeastern corner, rises to 1,053 feet (321 metres).