The whole of Kantaberget mountain burned about 150 years ago. Some older pines survived the fire but most trees which stand here now have grown after the fire. There are a few places with forest where the pines have grown densely and not yet begun to thin out. The area is 2.4 square kilometres in size.
Kantaberget lies just south of road 94 in Älvsbyn municipality, about 6 kilometres west-southwest of the village of Nattberget. Kantaberget kan be reached via logging roads from several directions. At Vistbäcken a road leads southwards and the first turning leads to the reserve.