design just ONE province

[Ballbarian]

As for "volcano", I remind that the random map generator add a volcano to provinces with the special type "firesite", so we could use "firesite" as a prerequired terrain type for such province (or maybe "firesite" + "mountain")

My SemiRandom program currently recognizes the PATTERN volcano as any province with the "firesite" flag set, or if it finds a single mountain province with no mountain neighbors.

And I already have the number of land and sea province for each province, so I could use "lake", "peninsula", "island", "last/hidden" and mega province without problem.

SR already recognizes island, lake, peninsula, lost, valley, coast & cave patterns. Feel free to have a look if it will be any help to you.

About caves, I remind that cave provinces have already been added to the game.

I have never seen the random map generator set cave terrain for a province. Maybe I am just really unlucky, so somebody correct me if I am wrong. That's why my SR project looks for this pattern and changes it to cave.