United States of America
Heidecke Lake State Fish and Wildlife Area is an Illinois state park on 1,300 acres (526 ha) in Grundy County, Illinois, United States. It is an artificial cooling pond originally excavated to enable the operation of the now defunct Collins Generating Station.
Listen to the audio guide for Heidecke Lake State Fish and Wildlife Area Free on WIP — starts by itself when you arrive, even with the screen off