Openmaps.7z -

: Raw geospatial features like roads, buildings, and points of interest (POIs) in formats like .osm (XML), .shp (Shapefile), or .geojson .

: Pre-processed map images (e.g., gmapsupp.img ) specifically formatted for loading onto GPS devices.

Since .7z is a high-compression format, you will need a third-party tool to extract it: