Board Thread:General Mod Discussion/@comment-28153737-20161231210535/@comment-28153737-20170101045824

The region files ids never change. They are coordinate based. example, in  r.240.101.mca, 240 is east/west (Longitude), and 101 is north/south (Latitude). r.240.101.mca is the in eastern end of the northern mordor mtns. And r.240.30.mca is northern dorwinion, so basically anything that has longitutde of 240+ and between 30 and 101 latitude will be deleted for Rhudel to exist.