(525 ILCS 30/3.10) (from Ch. 105, par. 703.10)
    Sec. 3.10. "Natural area" means an area of land in public or private ownership which, in the opinion of the Commission, either retains or has recovered to a substantial degree its original natural or primeval character, though it need not be completely undisturbed, or has floral, faunal, ecological, geological or archaeological features of scientific, educational, scenic or esthetic interest.
(Source: P.A. 82-445.)