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Lontzkedüne (in the background)
View from the Lontzkedüne to the Lebasee, the trees that have already been reached by the sand are dying

The Lontzkedüne (Polish : Wydma Łącka ) is the largest shifting dune on the Pomeranian Baltic coast. It has the shape of a sickle or a crescent moon and is part of the dune area that covers an area of ​​approximately 500 hectares . The natural dune lies on the 17 km long spit between the Lebasee and the Baltic Sea . It is between 30 and 42 meters high, about 1300 meters long and 500 meters wide and moves about 12 meters a year to the east due to the prevailing westerly winds. In doing so, it buries the original landscape, forest and moor under itself. Łączka was buried by the dune in the past. On the west side leaning towards the wind, the dune has a slight slope, while on the side leaning towards the wind, the slope is very steep. From a wind speed of 18 km / h, the grains of sand begin to roll up the flat side until they fall down on the upper edge on the sheltered side. While the dune grows in height in spring and summer with rather weak winds, it flattens out in stronger winds in autumn and winter and then reaches a higher migration speed. On the back of the shifting dune, stump fields of former forests come to light.

The dune can be reached on an approximately eight kilometer long footpath or bike path through pine forests from the place Łeba ( Leba ) from the east side. Electric taxis also drive from the parking lot to the dune. The visit is chargeable from this page. From the west side, the dune can only be reached by a 16-kilometer walk on the beach. Since the dune landscape is under nature protection, entry is only permitted in the approved areas.

The Lontzkedüne has been part of the Slowinzi National Park since 1966 .

Dune ridge of the Lontzkedüne near Łeba

Coordinates: 54 ° 44 ′ 52.6 "  N , 17 ° 25 ′ 29.2"  E