Sielbeck Forest Natural Area
Encyclopedia
Sielbeck Forest Natural Area is an Illinois state park on 385 acres (1.56 km²) in Johnson County, Illinois
, United States
.
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...
, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
.