In central part of eastern Norway, on the border between Sigdal and Numedal valleys, you can find the last of the last big wilderness forest areas of Norway. 205 km2 continuous mountain old growth forests, with the last fairly intact extensive valley, named Trillemarka. The area is situated 100 km west of the capital Oslo.
Trillemarka - Rollagsfjell has all the qualities of the original Norwegian forests:
A broken country with untouched valleys and mountain sides, rivers and spectacular small and big lakes, very old trees and forests, and a huge amount of species dependent on natural forest dynamics.
The area constitute a paradise for outdoor recreation and experience of virgin forests and untouched nature, and it is the last bastion for a lot of redlisted species.
Norway is at the bottom of forest protection in the boreal forests. Caused by an intensive forestry, spread around in the most of the forests, there are very little old growth forests left, and especially large, continuous wilderness areas are rear.
Among 40 known areas larger than 10 km2, Trillemarka - Rollagsfjell is the largest and the most valuable of them.