Data Sources
- Natural Earth Data Global base map data
- License : Public Domain
Download : Natural Earth Downloads
NASA SRTM : 90m Global Digital Elevation Mesh
- License : Public Domain
Download : (GLCF)
NOAA ETOPO1 : 1arcsecond Global Digital Elevation Mesh includng Bathymetry
- License : Public Domain
- Download : (NOAA)
- * OpenStreetMap Project
- Street map data for the world
- License : Open Database License
Download : (geofabrik.de)