Grinde (landform)

A grinde (plural: grinden) is an almost treeless area of wet heathland found on the rounded bunter sandstone ridges of the Northern Black Forest in Germany. The grinden reached their greatest extent in the early 19th century when they ran from the Kniebis mountain near Freudenstadt in the south to the heights near Dobel in the north. Today they are restricted to the highest parts of the Northern Black Forest around the summits of the Hornisgrinde, Schliffkopf and Kniebis (900 to 1,163 m above sea level (NHN)). They still cover an area of about 180 ha. Conservation measures and careful grazing by robust breeds of cattle (especially the Hinterwald), goats and sheep should enable the remaining grinden to be preserved for their great ecological value and as an important feature of the landscape. Most of them are under conservation orders.

The German term "Grinde" comes from Old High German and is related to the Swabian-Alemannic word "Grind", which means something like "bald head". This term was used to refer to the treeless summits of the region.

The grinden emerged mainly as a result of human influence. The growth of the population in the 14th century meant that the pastures of the Black Forest valleys were no longer sufficient for the grazing of cattle. For this reason, cattle and goats were driven to pasture on the flat highlands with their open stands of trees. The so-called Weidbrennen or pasture-burning at the end of the grazing year hindered the growth of trees, promoted the growth of grass and increased the areas for grazing. Through the use of the highlands as pasture the land nearer the villages could be used for the production of hay. However overgrazing of the highlands led to soil compaction and a loss of nutrients by the 16th century. The result was that the land became waterlogged and bogs formed due to the high level of precipitation of up to 2,200 mm/year. These processes led to the formation of the grinden.

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