A lot of what you see here has been adapted from pre-existing work by the community. Every effort has been made to clearly attribute work that is not mine.

Where required (by license or request), I have contacted the individual rights-holders and asked for permission to use their work beforehand.

Where modifications have been made, they have been released under a license compatible with the work it derives from.

If you find your work has been used without attribution or in a way that goes against your will, please get in touch.

Data Sources

• OpenStreetMap contributors. (2026). OpenStreetMap. OpenStreetMap Foundation. Retrieved from https://www.openstreetmap.org/

• Geofabrik GmbH. (2026). Download OpenStreetMap data for this region: Japan. Geofabrik Download Server. Retrieved from https://download.geofabrik.de/asia/japan.html

• NASA JPL. (2020). NASADEM Merged DEM Global 1 arc second V001 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MEASURES/NASADEM/NASADEM_HGT.001 Date Accessed: 2026-06-27

• GeoNames. (2026). List of Japanese city names. GeoNames Download Server. Retrieved from https://download.geonames.org/export/dump/JP.zip

• Kukuk, T. (2026). Precompiled sea tiles for mkgmap. thkukuk.de. Retrieved from https://www.thkukuk.de/osm/data/sea-latest.zip

• Kukuk, T. (2026). Precompiled boundary tiles for mkgmap. thkukuk.de. Retrieved from https://www.thkukuk.de/osm/data/bounds-latest.zip

Map Styles

• ligfietser. (2026). mkgmap-style-sheets [mkgmap style]. Retrieved from https://github.com/ligfietser/mkgmap-style-sheets

• Freizeitkarte Development Team. (2026). fzk-mde-garmin [mkgmap style]. Retrieved from https://github.com/freizeitkarte/fzk-mde-garmin

Tools

• mkgmap development team. (2026). mkgmap (Version r4924) [Software]. Retrieved from https://www.mkgmap.org.uk/download/mkgmap.html

• mkgmap development team. (2026). splitter (Version r654) [Software]. Retrieved from https://www.mkgmap.org.uk/download/splitter.html

• KAKASI project. (1999-2001). KAKASI — Kanji and Kana Simple Inverter [Software]. Retrieved from http://kakasi.namazu.org/

• osmosis development team. (2026). osmosis (Version 0.49.2) [Software]. OpenStreetMap Wiki. Retrieved from https://github.com/openstreetmap/osmosis

• michel40. (2022). TYPViewer (Version 4.6.5) [Software]. Retrieved from https://sites.google.com/site/sherco40/home

• Topf, J. (2026). osmium-tool (Version 1.19.0) [Software]. osmcode. Retrieved from https://github.com/osmcode/osmium-tool

• Maproom. (2026). QMapShack (Version 1.20.3) [Software]. Retrieved from https://github.com/Maproom/qmapshack/

Resources

• suke-blog. (2026). Garmin カスタムマップの作り方. Retrieved from https://www.suke-blog.com/garmin-custom-map/

• de Ferranti, J. (2026). Digital Elevation Data. Viewfinder Panoramas. Retrieved from https://www.viewfinderpanoramas.org/dem3.html

• T-MZ. (1998-2025). Garmin GPS 用日本地図データ [Garmin GPS Japanese Map Data]. Retrieved from https://tmz.skr.jp/data/gmap.html

• Bullock, B. (2026). What are the symbols on Japanese maps? sci.lang.japan Frequently Asked Questions. Retrieved from https://www.sljfaq.org/afaq/map-symbols.html

• Schneider, W. (2026). BBBike Garmin custom map extracts. BBBike.org. Retrieved from https://garmin.bbbike.org/garmin.html

• Association for Asian Studies. (2026). The Past, Present, and Future of the Swastika in Japan. Education About Asia. Retrieved from https://www.asianstudies.org/publications/eaa/archives/the-past-present-and-future-of-the-swastika-in-japan/