The dataset has been reprojected to WGS 1984 / UTM zone 24 North to conform with the standard projection used for datasets hosted on the Greenland Mineral Resources Portal (www.greenmin.gl

). A hillshade has been added based on the Greenland Ice Sheet Mapping Project (GIMP) Digital Elevation Model. Bathymetry has been assigned using data from the General Bathymetric Chart of the Oceans (GEBCO) 2019/2021 grid.

Systematic topographic surveying of the inhabited coastal areas of Greenland was initiated by the Geodetic Institute of Denmark in 1927 and resulted in the production of a series of 1:250,000 scale topographic map sheets, which continue to form the basis for the overall topographic mapping of Greenland. A primary geodetic network was established based on an astronomical station at Qoornoq. Initially, map detail was obtained through plane table surveys; however, between 1932 and 1938 extensive aerial photography of the coastal regions was carried out, forming the basis for subsequent photogrammetric compilation.

By 1964, all ice-free areas of Greenland had been photographed, and map sheets were completed for nearly the entire country. Early map sheets depicted relief using hillshading and contour lines, while later editions were produced without relief shading but retained color differentiation between lowland and upland areas. Contours are shown at 50 m intervals. The maps were originally produced using Lambert conformal conic projection or UTM based on the international ellipsoid, and the datum was changed from the Qoornoq Datum to the North American Datum 1984. Place names are provided in Greenlandic (Inuit) and Danish. Revisions of the map sheets have been limited to significant corrections.