- I download .gpx files from the geocaching.com site. To view them in Maemo Mapper, you need to first filter out all of the log entries in the .gpx file; if you don't do this, they won't load properly. Once you've done this, I start Maemo Mapper, and load in the .gpx file as a POI (Points Of Interest) file - the cache locations then show up as purple dots in Maemo Mapper