Considered unsafe , in 1943 , CP - 1 was reconstructed as CP - 2 , in what is today known as Red Gate Woods .
Was then the Argonne Forest of the Cook County Forest Preserve District near Palos Hills .
Considered unsafe , in 1943 , CP - 1 was reconstructed as CP - 2 , in what is today known as Red Gate Woods but was then the Argonne Forest of the Cook County Forest Preserve District near Palos Hills .