Blank physical map of Sardinia, Italy, for geo-location purpose, with province boundaries. Altitude levels : 25m, 50, 100, 200, 400, 600, etc. (same for bathymetry), zoomed for Sinis
Own work

Shorelines : NASA Shuttle Radar Topography Mission (SWBD) (public domain) ;
Topography : NASA Shuttle Radar Topography Mission (SRTM3 v.2) (public domain) ;
Bathymetry: NGDC ETOPO1 (public domain) ;
Province boundaries : File:Sardinia Map.png by Dch under licence cc-by-sa-3.0 or GFDL.
Sémhur (talk), zoomed by Gigillo83