An excellent display of how humans can rehabilitate and restore an area where a heavy industry polluted the water so severely that it was unsuitable to sustain any kind of life. A a film showing how birds returned to an environment once devastated by industry. The lakes around the northern Slovenian town of Velenje, placed in the Central Europe, are geographic center of the film. They emerged as the land above the lignite mines subsided and the depressions were filled with water. The mines start...