Picture of Düne taken from airplane, in the background the island Heligoland
|Area||0.7 km2 (0.27 sq mi)|
The small island Düne is part of the German State Schleswig-Holstein. Situated 1 mile to the east of the main island Heligoland, Düne is part of the natural landscape Helgoländer Felssockel [Heligoland rock core]. The island measures 0.78 mile in length and 0.53 mile in width.
Until the 17th century, Düne was connected to Heligoland. On New Year's Eve 1721 a big storm surge separated the dunes from Heligoland. Therefore, the island that arose was called Düne (English: Dune). In 1935 the size of the island was 10 hectares (25 acres). In 1940 the Nazi government increased the size of the island to 40 hectares (99 acres). This increase was for military use. An airfield was built that is still used today. The Heligoland Airport has three runways, of which the longest is 480 metres (1,570 feet).
- Düne at the website of Heligoland municipality
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