Based on the GEBCO 2014 dataset [1], the area between the 0m coastline of today and the -120m coastline of the Last Glacial Maximum (LGM), is derived and provided in this dataset. To achieve a more realistic and higher resoluting coastline, for producing larger scale maps, the gebco dataset was interpolated from the 30 arc seconds original resolution, to a 0,001 degree resoluting raster. [1] http://www.gebco.net/data_and_products/gridded_bathymetry_data/