Regulation No. 158 on the conservatoin of Halvfaråsen nature reserve, Sigdal Municipality, Buskerud.

Purpose of the Regulation is to preserve a forest area with large variations in topography, habitats, species and ecological processes. The nature reserve has large deposits of high productivity and little affected southern boreal forest. It's old, rough grown spruce and pine, and a considerable number of dead wood. The area is distinguished by a large number of endangered and rare species of wood-inhabiting fungi in particular, and it has particular importance for biodiversity.