Along the border zone between the mountain range and the forests lies an area unique in Europe for its untouched forest ecosystems. The nature reserve Aptasvare old growth mountain forest is a link in the chain of nature reserves that runs along the montane rim. The area is 139 square kilometres in size.
Aptasvare lies between Kiruna and Svappavaara, south of the E10. A paved road runs from the E10 to the Swedish Institute of Space Physics (IRF). A gravel roads leads from the IRF to the small car park where the trail begins. The regional bus operator "Länstrafiken Norrbotten" has a bus stop at the E10/IRF Kiruna.