De Plateaux-Hageven is a mosaic of different types of nature. The side walls and summits of the dunes are the driest soils of the area. Nowadays the sand doesn't drift as much as it used to. Grey hair-grass and silver-tip haircap moss have mostly fixated it.
The Turfven is a remnant of a ring fen, an extremely rare fen type in which high moorland covers the surface of the water as a thick carpet. Due to the extraction of sand right next to the fen a second pool has formed that is connected with the original fen. For years both waters were used as fishing ponds, but since their purchase in 2004 the focus has shifted to restoring the high moorland landscape. The surrounding meadowland has been transformed into lean grassland, a favourite home for dragonflies and butterflies.