Of the overall parcel, 252 acres are classified as old growth forest and listed as a National Natural Landmark (NNL).

[2] Surviving large trees in the old-growth section of the Lilley Cornett Woods include a white oak that has been tree-ring-dated to 1669, more than 350 years before the present.

[1] The Woods are named in honor of the parcel's longtime owner and guardian, a private citizen who is reported to have refused all offers from loggers.

[1] The Lilley Cornett Woods are managed with minimal additional human disturbance for scientific purposes.

A self-guided 0.5-mile loop trail invites unsupervised access to a verge section of the Woods adjacent to the old growth.