|This article is about the current version of DF.|
A region with 24 or fewer tiles is a small subregion, one with 25 to 99 tiles is a medium subregion, and one with 100 or more tiles is a large subregion.
|Forest||Broadleaf Forest, Conifer Forest, Taiga*|
|Grassland||Grassland, Savanna, Shrubland|
|Hills||Hilly Grassland, Hilly Savanna, Hilly Shrubland|
|Desert||Sand Desert, Rocky Wasteland, Hilly Rocky Wasteland, Badlands|
Temperature, Elevation, and Volcanism
Similarly, any tile with 300 or more elevation will be a mountain tile, and any tile with less than 100 elevation will be an ocean tile, neither of which form subregions with other land biomes. Volcanism is usually irrelevant for subregions, but a volcano tile adjacent to at least one mountain tile will be generated as if it had an elevation of 400, and will count as a mountain tile.
Additionally, during world generation lakes will sometimes be generated in the place of tiles that would usually have an elevation higher than 100, in which case they again do not form subregions with adjacent land tiles.