lost swamp

[hrochland]

Hey. I have a problem for about one hundred and fifty in order. For several years I was in the mode of a new type of terrain. One day he disappeared. I invented ever new things and planned to fix it later lost ground. And so today I learned that I do not know why terrain_swamp terrain appear. Here is minimod if anyone has time to look at where I'm wrong. Thank you very much.
Hroch

P.S.
Perhaps my problem and minimod will help others