Gryden Parabolic Dune

In close proximity to the North Sea in the dune heath is "Gryden", the deflation trough of the large parabolic dune of the dune plantation. A parabolic dune consists of a high middle section and two arms and has the shape of a large horseshoe. The name for this form of dunes was first given in 1894 by geologist K.J. Steenstrup used in an article about hiking the dunes.A parabolic dune can be created when a hole is created in the dune vegetation and the wind blows the sand away from the dune. If the wind continues to blow sand out of the dune, the middle part of the dune begins to migrate inland. Then the sand that is blown away from the inside of the parabola is deposited on the windbreak side of the dune. The two arms are held in place by the vegetation on the outside of the dune.When the wind blows, all of the sand disappears from the inside of the parabolic dune. Gryden is a good example of this. Here you can see that the wind has blown the sand down to the water table.The parabolic dune is approximately 1,000 m wide and the arms are around 1,400 m long. From the top of the dune you have a view of the North Sea and the Nissum Fjord.de.naturstyrelsen.dk/naturerlebnisse/natur-guide/husby-klitplantage/sehenswuerdigkeits

Interesting landscape

Parabolic dune in the Husby dune plantation