What is "trillemarka"

Trillemarka (Trillemarka - Rollagsfjell) is a nature reserve located in Buskerud, Norway. It was created on December 13, 2002 and is located in the hill- and mountain areas between Nore in Numedal and Solevann in Sigdal, partially in the municipalities of Sigdal, Nore og Uvdal, and Rollag. The nature reserve consists of one of the largest natural forest areas in central Østlandet and includes virgin forest and 93 red list species.

The Norwegian government decided on January 8, 2008 that is to be protected. The landowners received NOK 100 million in compensation.