For what it is worth, I wrote some regular expressions for ignoring some known "noise" warnings generated by mkgmap. After the removal of the "noise", only "genuine" warnings will be issued for Finland. The index page of my Garmin map of Finland http://www.polkupyoraily.net/osm/ is in Finnish, but I will try to make it multilingual in the near future. You may find the following files useful: http://www.polkupyoraily.net/osm/files/osm2img.sh (the wrapper script) http://www.polkupyoraily.net/osm/files/logging.properties (java -Dlog.config) http://www.polkupyoraily.net/osm/files/logging.ignore (grep -vf) These files contain map-specific tile definitions for splitter and mkgmap: http://www.polkupyoraily.net/osm/files/areas.list http://www.polkupyoraily.net/osm/files/mkgmap.args Best regards, Marko