I wanted to have lakes also on higher altitudes, otherwise it would become boring up there on the flolands.
The trick is that it takes the existing mapgen and fills pools with water. It does not alter the rest.
Currently it as several bugs and is very slow. So please take it, play with it and make it better.
git: https://github.com/CasimirKaPazi/bergsee
depends: default
license: GPLv3 or later