English: The red markers are attestations of places in the Luihgau pagus from 779 until 1005. The green markers are from 1041 to 1059. The data used was from Open Street Map and MapSurfer ASTER GDEM-SRTM Hillshade. The software used was QGIS and Gimp. The information can be found in the standard sources including Ulrich Nonn's Pagus und Comitatus, and Ernst's Histoire du Limbourg.
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