Hjelm seen from Djursland
|Area||0.62 km2 (0.24 sq mi)|
|Highest elevation||39 m (128 ft)|
|Year first constructed||1856|
|Tower shape||cylindrical tower with balcony and lantern|
|Markings / pattern||white tower, red lantern dome|
|Height||18 metres (59 ft)|
|Focal height||61 metres (200 ft)|
|Light source||solar power|
|Characteristic||white, red or green light, depending on direction, 4 s on, 4 s off|
In 2009, the island was included in Mols Bjerge National Park. Most of the island is privately owned.
The name Hjelm literally translates to Helmet in English. The island has also been referred to as Helm in English.
There have been found evidence of human activity on Hjelm, as early as the Stone Ages, but it first entered Denmarks history in 1287, when the outlawed Marsk Stig fled to this barren island, after the murder of Erik Klipping the year before. The outlawed sought help and assistance from the Norwegian king Eric "Priest Hater" and he supplied them with a total of three fortresses, various fortifications, ships and troops. Recent archaeological excavations have revealed, that in the year of 1289 Marsk Stig and his men attacked and demolished the royal castle of Brattingsborg on the island of Samsø, just south of Hjelm.  With that neighbouring threat out of the way, the outlaws conducted piracy and counterfeiting from Hjelm until 1295. Marsk Stig died on the island in December 1293 of unknown causes, but it was not until 1306, that Erik Menved felt strong enough to take back the small island.
- Pauline Asingh og Niels Engberg: "Marsk Stig og de fredløse på Hjelm" Jysk Arkæologisk Selskab (2002). ISBN 87-88415-13-9. On the recent archaeological excavations. (Danish)
- Hjelm Multimedia-site hosted by the Danish Agency for Culture.
- Hjelm The islands own homepage (Danish)
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