Act on natural areas in Oslo and nearby communities (Forest Act) No. 35 of 2009.
The purpose of the Act is to promote and facilitate outdoor recreation ensuring Marka's borders and preserve a natural and cultural heritage, as well as sustainability thereof. The geographical area Marka is composed by the following areas: Kjekstad Marka, Vard Åsmarka, Vestmarka Krokskogen, Bærumsmarka, North Marka, Lillomarka, Romeriksåsene, Gjellerås Marka, Østmarka and Sørmarka. Marka is an agricultural, natural and recreational area (LNF area) pursuing Act relative to planning and construction.