Hidden Paradise: Nature Returns to a Forgotten Lake

A lake somewhere in the Alsace region of France is so mysterious to the outside world that barely a few people know of its existence. While a number of animals continue to live in it, the plants are under threat. Anglers use nutrient-rich food as bait, thus fattening the fish, but increasing the waste products excreted, resulting in water pollution that destroys the plants. Wondering where this "hidden" lake is? Watch the documentary and you may or may not find out.