Data sources and licences
Every layer on the map, on or off, with where its data comes from and the licence it is under. Where the data manifest describes a layer, its source, licence, retrieval date and feature count follow. The underlying data stays under its own licence; see the Terms of Use.
Basemap
OpenFreeMap vector tiles and style in the OpenMapTiles schema, © OpenStreetMap contributors, under the ODbL. Served from our own storage, with OpenFreeMap as the fallback.
Imagery
NASA GIBS: Blue Marble (shaded relief and bathymetry), VIIRS City Lights 2012 in night mode and the previous day's VIIRS SNPP true-colour pass in day mode. NASA imagery is in the public domain.
Terrain
Mapterhorn terrain tiles, CC BY.