The rock sets the mood. Western Børgefjell is built from a dark granite that carries the massif's name, and it gives the high country a bleak, stripped quality — grey and black peaks with almost nothing growing on them, rising over slopes of loose scree. Kvigtinden tops out at 1,699 metres, the highest point in the park. Jetnamsklumpen, at 1,513 metres, is the tallest mountain in all of Trøndelag. Around Rainesfjellet the ground is raw stone rubble without vegetation of any kind. Elsewhere the character flips completely: sub-glacial moraines rolling green, fertile slopes, wide marshes, and water everywhere — lakes, tarns, and rivers that in early summer come down off the snowfields loud enough to drown conversation. Two landscapes, roughly a valley apart.

The park's full official name is Børgefjell/Byrkije, and in Southern Sami it is Byrkije vaarjelimmiedajve. This is not a courtesy translation added to a signboard. The Sami held this land until the beginning of the twentieth century and have kept reindeer here for at least five hundred years, and every square kilometre of the national park is still used for reindeer grazing today. The west, east and south are mainly summer pasture; the northern reaches are grazed year-round; in the far east, herds cross in from Sweden as they always have. Sami settlement sites and hunting stations survive both inside the park and in the country around it. Børgefjell is often described as untouched wilderness, which is a Norwegian idea rather than an accurate one. It is a worked landscape — it has simply been worked by people who did not leave roads.

Børgefjell is best known for the Arctic fox, and the reason is uncomfortable. Norway protected the species in 1930, and nearly a century later the population still has not recovered; only a handful of animals remain here. A white fox on grey scree is one of the rarest sightings in Norwegian nature, and the odds are against you. The wolverine is the large predator you are most likely to find evidence of, usually as tracks across a snowfield rather than the animal itself. Lynx are present, and brown bears range through. Lower down the food chain the park holds red fox, least weasel, pine marten, stoat, and the occasional otter working a riverbank. Overhead, the rough-legged buzzard is the common raptor; golden eagles and snowy owls are the prizes. Willow and rock ptarmigan burst from underfoot with the abruptness that keeps hikers permanently on edge.

The name is a small puzzle. Its second element straightforwardly means fell, or mountain. The first appears to come from an Old Norse word for a fort or entrenchment, which raises the obvious question of what a fort was doing out here. The suggested answers are speculative and revealing: a station for collecting tax from the Southern Sami, perhaps, or a border post facing the Swedes. Both possibilities describe the same thing — an outside power trying to get a grip on country that did not lend itself to being gripped. Norwegian farms only appear at the end of the 1700s and into the 1800s, and they came because land had run short elsewhere, not because anyone thought this was easy ground.

The park now covers 1,447 square kilometres across Hattfjelldal, Grane, Namsskogan and Røyrvik, enlarged in 1973 and again in 2003, running up against the Swedish border along its eastern edge. Around three hundred plant species grow here. The tree line sits at 500 to 600 metres — mostly birch, with spruce and pine lower down — and above it the vegetation is heath, sedge and bilberry, hugging the ground. Because nothing is marked, route-finding is genuinely on you: map, compass, and a realistic view of how fast weather moves at this latitude. That is the trade the Trekking Association made in 1932. Børgefjell gives you no help and, in exchange, gives you something increasingly hard to find in Europe — a horizon with nothing on it.