Illinois has a strong suit in sedimentary rocks, fossils, rivers and waterfalls. Here are some of the state's best attractions and destinations for geology.
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By Andrew Alden, About.com Guide
|Apple River Canyon State Park, Apple River||Castle Rock State Park, Oregon||Cave-In-Rock State Park, Cave-In-Rock||Glacial Park Nature Preserve, Richmond|
|Illinois Beach, Zion||Illinois Caverns State Natural Area, Waterloo||Kankakee River State Park, Bourbonnais||Matthiessen State Park, Utica|
|Mississippi Palisades State Park, Savanna||Moraine Hills State Park, McHenry||Shawnee National Forest, Southern Illinois||Starved Rock State Park, Utica|