Kograben

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Denmark with Danewerk and a body of water in front of this wall
The Kograben on the edge of the Jagel airfield
Positional relationships of the trench

The Kograben (Danish: Kovirke ) is a southern part of the Danewerkes .

history

The Kograben is located 1 to 2 km south of the Danewerk near Schleswig and extends over a length of 7 km from the Rheider Au near Kurburg to the Selker Noor on the Schlei . The construction of the Kograben consisted of a 2 m high and 7 m wide earth wall, which was preceded by a 4 m wide and 3 m deep pointed ditch . The embankment of the earth wall was provided with a wooden palisade on the side facing the pointed ditch, which was secured by inclined support pillars.

In this construction, the Kograben served as a land defense between the Danish-ruled north and the Ödmark in the Schleswig and Holstein landscapes .

The time when the Kograben was built is difficult to date: recent studies indicate that it was built around the year 800. According to this, the Kograben is equated with the Göttrikswall built by Gudfred in 808 against the Frankish empire of Charlemagne . The special palisade technique, however, is similar to the technique that was used in the Danish ring castles , which were only built around the year 980 .

It is unclear whether the Kograben was also part of the shipping route between the North Sea and the Baltic Sea . The Berlin historian Klaus Goldmann is of the opinion that in the early Middle Ages shipping used the route via Eider - Treene - Rheider Au - Schlei to avoid the dangerous circumnavigation of Jutland . A developed lock technology for that time or before is only documented for the Tumilat Canal in distant Egypt . On the other hand, there is also the possibility that the ships from the Selker Noor to the watershed (1 km distance with 25 m difference in altitude) were pulled on dry land, but on the much longer section between the watershed and Rheider Au, but effortlessly on the water of the Kograben. A possible origin of the word “Kograben” from “Kog-Graben” (= ditch for cog ) could point to such a use as a ship canal between Rheider Au and Schlei .

Together with the other sections of the Danewerk, the Viking town of Haithabu and other Viking Age sites in Northern Europe , the Kograben has been nominated as a UNESCO World Heritage Site as part of the transnational project “Viking Age Sites in Northern Europe” . Part of the Kograben is part of the “ Haithabu-Dannewerk ” nature reserve .

literature

  • Ulrich Petersen : Historical news of the famous Cimbrian land weirs, the so-called Kohgraben and large Walle Dännewerk in the Duchy of Schleswig. Hamburg 1752.

Web links

Commons : Kograben  - collection of images, videos and audio files

Individual evidence

  1. Klaus-Joachim Lorenzen-Schmidt, Ortwin Pelc (Ed.): The new Schleswig-Holstein Lexicon. Wachholtz, Neumünster 2006, Lemma Kograben.
  2. Klaus Goldmann About early historical hydraulic structures. ( Memento of the original from June 22, 2006 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. ( MS Word ; 71 kB) @1@ 2Template: Webachiv / IABot / www.goldmannsposition.de
  3. SKYLLIS - Journal for Underwater Archeology Volume 3, 2000 Issue 1 (PDF; 3.3 MB)
  4. Canals for Shiping in Ancient Egypt ( Memento of the original from April 7, 2009 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.reshafim.org.il
  5. Reinhard Dzingel: Frisians in the early medieval Baltic Sea? , Moisburg, June 2012, p. 3, (PDF; 2.6 MB)
  6. UNESCO World Heritage Site. Project office World Heritage Haithabu and Danewerk, accessed on January 3, 2015 .
  7. ^ Dagmar Unverhau: Hollingstedt from a cartographic-historical point of view. Wachholtz, Neumünster 1987, p. 104.

Coordinates: 54 ° 28 ′ 1.5 ″  N , 9 ° 30 ′ 32.5 ″  E