De Sallandse Heuvelrug
An ice-pushed ridge of open heather hills above Salland — the last redoubt of the Dutch black grouse, nightjars at dusk, and a Canadian war cemetery on the flank.
The Sallandse Heuvelrug is a leftover of the second-to-last ice age: a push moraine the Saale ice sheet bulldozed up some hundred and fifty thousand years ago, a whale-backed ridge of sand and gravel rising to about seventy-five metres between Nijverdal and Holten. That is modest by anyone else's arithmetic and dramatic by Dutch — the ridge stands proud of the flat Salland farmland like a coastline, and from the Holterberg's open crown the view runs uninterrupted to the horizon in most directions. What makes it singular is what grows on top: one of the largest continuous dry heathlands in northwest Europe, kilometres of unbroken Calluna over the summits, kept open by sheep flocks and hard mowing where a century of pine planting once tried to close it.
The heath's most famous resident is also its most precarious. The korhoen — the black grouse — vanished from every other Dutch landscape through the twentieth century until this ridge held the last lekking males in the country; the population bottomed out at a handful of birds, and since 2012 it has been propped with translocated Swedish grouse in a conservation vigil followed like a state of the nation. The honest report is mixed — nitrogen from the surrounding farmland impoverishes the heath's insect life faster than management can compensate — but the birds still display at dawn on the closed reserve at the Sprengenberg, and the park has become the national classroom for what heathland restoration actually costs. The rest of the bird suite thrives on easier terms: nightjars in numbers on the sandy fringes, woodlarks over the blowouts, stonechats on every second bush.
History sits lightly but sharply here. On the Holterberg's eastern shoulder lies the Canadian War Cemetery, nearly fourteen hundred graves from the 1945 liberation of the eastern Netherlands, pine-ringed and immaculately kept, with an information centre that gives the campaign its Dutch geography. The viewpoint tower on the Koningsbelten and the old sheepfolds fill in the gentler centuries — this was grazing commons for the Sallandse villages, which is why it was never ploughed and why it survived to be designated in 2004.
What's worth knowing before you go
Two gateways, one at each end: the Buitencentrum at Nijverdal (with the national park exhibition, and a rail station fifteen minutes' walk away) and the Natuurmuseum Holterberg side above Holten. The classic crossing is ridge-top from one to the other, about ten kilometres of open heather walking — do it late August for the purple at full burn. Cyclists have their own crossing lanes; the climb from Holten is a local rite. Dawn in April–May is grouse time, viewable only from the marked observation point near the Sprengenberg with binoculars mandatory — do not try to get closer, every metre of disturbance counts against thirty years of work. The evening version is easier: park at the Noetselerberg side in June, walk out at dusk, and the nightjars start their sewing-machine churr around you within the half hour.