Excellente oeuvre pour qui cherche beaucoup de contenu concernant Rokugan. Pratique pour toutes les éditions, l'oeuvre est très complète. Je recommande de la lire par petit bout et de les exploiter un par un, une lecture complète étant peu digeste

I would give this book six stars if I could. This 4th edition L5R book clearly defines the boundaries of each established province and describes in great detail the major points of interest in each, thus clearing up some of the vagaries or confusing content from earlier editions. You will find in some cases that the content of this book conflicts with some other maps, but gamemasters are free to pick and choose just as before (such as the exact location of Shiro Usagi, which was moved further north on 2nd ed. maps, but is now located more fitting to the 1st ed. map). This definitive source would be a great addition to any L5R library for understanding the political and geographic shifts of Rokugan (no matter which edition you play).

In addition, if one has a keen eye, you might note that there are some areas on the map that seem not to be covered by the established provinces. This allows gamemasters to establish their own small provinces, or drop in supplemental ones (such as the Naishou Province from the book of the same name).