Travail personnel (own work).
Sources :

• Background map: data from NASA Shuttle Radar Topography Mission (SRTM3 v.2 & SWDB) (public domain)
• Villages from Calaisis wikipedia-fr article, under licence GFDL.
• Locator map made from Blank_map_of_Europe_-_Atelier_graphique_colors.svg created by Historicair under GFDL & CC-BY-SA-2.5
• Other things (scale, windrose, ...) from Image:Maps template-fr.svg by Sting.

Softwares used:

• NASA datas edited with 3DEM and Global Mapper 9 (limited version) by the United States Geological Survey (USGS)
• Vectorized with Inkscape
• Cartographic tutorials (in french)

Others:

• Shaded relief (light direction): altitude 60°, azimuth 315°
• Font: Arial
• The background map is a raster image embedded in the SVG file.