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Castle Rock State Park (Illinois) Cave-in-Rock State Park; Cave-In-Rock, Illinois; Chain O'Lakes State Park (Illinois) Channahon State Park; Clinton Lake State Recreation Area; Coffeen Lake State Fish and Wildlife Area; Crawford County State Fish and Wildlife Area
The earliest Carboniferous rocks sit conformably on top of the youngest Devonian in Illinois; Carboniferous rocks in the state are areally extensive, regionally very well-exposed, and form a large percentage of the state's bedrock. Illinois remained marine for much of the Carboniferous, with limestones making up most of the rock deposited ...
The Illinois state park system began in 1908 with what is now Fort Massac State Park, in the U.S. state of Illinois, becoming the first park in a system encompassing over 60 parks and about the same number of recreational and wildlife areas.
The Illinoian Stage is the name used by Quaternary geologists in North America to designate the Penultimate Glacial Period c.191,000 to c.130,000 years ago, during the late Middle Pleistocene (Chibanian), when sediments comprising the Illinoian Glacial Lobe were deposited.
A bridge over Rock Creek northeast of Manteno, Illinois, as flood water recedes in April 2006. Rock Creek is a 24.7-mile-long (39.8 km) [1] tributary of the Kankakee River in the U.S. state of Illinois. [2] It empties into the Kankakee River in Kankakee River State Park, northwest of Kankakee, Illinois. It starts in higher land and then drops ...
State Park Place is an unincorporated community in Madison and St. Clair counties, Illinois, United States. State Park Place borders Collinsville to the east and Cahokia Mounds State Historic Site to the west. [2]
Spitler Woods State Natural Area is a 202.5-acre (81.9 ha) state park located adjacent to Mount Zion, Illinois. The state park is located within the Decatur, Illinois metropolitan area. The eastern two-thirds of the state park is a listed Illinois Nature Preserve noted for its old-growth forest grove of white oak and hickory .
The Fox River travels down near the border between McHenry County and Lake County in Illinois as it flows from the state border to Grass Lake, the first lake in the Chain. Grass Lake is the shallowest lake on the Chain, with an average depth of 3 feet (0.91 m) but is the third largest lake on the Chain, with an approximate area of 1,360 acres ...