Study region in the Baltic, showing the area of Wulfstan's voyage (see text). Locations of wind and current data collected during the 2004 voyage of the Ottar and used in GIS modelling experiments are shown as yellow grid. The grid is used for generating a least cost path (LCP) between the beginning and endpoint. Each dot on the grid contains data on wind speed (raster) and direction (vector). The dots are 10 Nmi (18 km) apart. The grid lies between 54º and 56º north and 10º and 20º east.

From Beyond illustration: 2d and 3d digital technologies as tools for discovery in archaeology by Bernard Frischer and Anastasia Dakouri-Hild