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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.
Pages in category "State parks of Illinois" The following 138 pages are in this category, out of 138 total. ... Chain O'Lakes State Park (Illinois)
Natural Landmarks in Illinois range from 53 to 6,500 acres (21.4 to 2,630.5 ha; 0.1 to 10.2 sq mi) in size. Owners include private individuals or organizations, and several county, state and federal agencies. [2] The National Natural Landmarks Program is administered by the National Park Service, a branch of the Department of the Interior. The ...
In 1990, Congressman Glenn Poshard sponsored and Congress passed the Illinois Wilderness Act, which set aside seven separate parcels of land within this National Forest as relatively small wilderness areas. The Garden of the Gods Wilderness, one of these parcels, is a roadless parcel of land within the national forest.
Weldon Springs State Park is an Illinois state park; the primary 550-acre (220 ha) area is located near Clinton, Illinois, while a secondary area is located near Monticello, Illinois. The former centers on Salt Creek and the impoundment of a tributary, Weldon Springs, to form Weldon Spring Lake , a reservoir .
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 earliest formation of Lake Chicago occurred when the Michigan Lobe of the glacier retreated northward into the basin of modern Lake Michigan, ca 13,000 years ago. [3] The edge of the retreating glacier formed moraines, the Park Moraine in present-day Illinois and the Lake Borders Moraine in Indiana and Michigan. [4]
Sandstone cliff at Starved Rock State Park, carved by the force of the Kankakee Torrent some 19,000 years ago. The Kankakee Torrent was a catastrophic flood that occurred about 19,000 calibrated years ago [1] in the Midwestern United States.