Słowiński

Słowiński, declared in 1967, is a coast in mid-manufacture. Baltic currents sealed two bays behind sand bars and left them as lagoon-lakes — Łebsko, Poland's third largest, and shallower Gardno — while onshore winds keep the bar itself moving: nearly five hundred hectares of bare, walking sand on the Łebska spit, the biggest field of live dunes between the Atlantic and the steppes. Wydma Łącka, the highest at 42 metres, advances east by three to ten metres a year, swallowing pine forest on its front edge and exhuming the grey skeletons of woods it buried generations ago on its back slope. The dune is named for Łączka, a village the sand took about three centuries back; the fishing hamlets learned to move.

The park is named for the Slovincians — Lutheran, Slavic-speaking fishers who held out on these waterlogged shores between German and Kashubian worlds until the twentieth century finished them off, by assimilation and then postwar expulsion. Their black-timbered, chessboard-walled cottages survive as the skansen at Kluki on Łebsko's western shore, and Rowokół, the 115-metre moraine hill above Smołdzino, keeps its old role as the coast's holy lookout, sightline to the whole bar-and-lagoon system. The spit has harder history too: at Rąbka the Luftwaffe ran a rocket range from 1940 to 1945, testing the Rheintochter anti-aircraft missile and the Rheinbote — and the same pads later launched Poland's own Meteor weather rockets from 1967 to 1974, a sequence the small museum among the pines lays out matter-of-factly.

A UNESCO biosphere reserve since 1976, the park earns it mostly with water rather than sand: Łebsko and Gardno raft tens of thousands of migrating ducks, geese and swans in autumn, white-tailed eagles work the reedbeds year-round, and the wet meadows behind the lagoons hold breeding waders that the bathing-beach coast to the west lost long ago.

What's worth knowing before you go

Łeba is the eastern gateway — a seasonal rail branch runs from Lębork — and Rowy serves the Gardno end; from the Rąbka gate it is some six flat kilometres to the dune front, walked, cycled or ridden by electric cart. There is no shade on the sand and midsummer middays are genuinely Saharan; go early, or in September, and climb Rowokół at Smołdzino for the overview the flat coast otherwise refuses. Autumn gales rearrange the dunes visibly and are their own spectacle, taken from the lee of the crest.

The connoisseur's approach is along the beach westward from Łeba into the park: after a few kilometres of ordinary strand the moving dunes arrive from the landward side and spill onto the shore — you meet the sand cliff from below, with nothing between it and the surf.