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Grassy Lake is a quiet, contemplative site, featuring gently rolling hills, oak woodlands, marshes and moraines. The preserve's 5.6 miles of …
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Tripadvisor
5.0/5 · 1 review
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May 24, 2020
A kame is formed by the collected sand, gravel and till deposited by glacier movement and meltwater. The kame at Grassy Lake i-- already the highest point in the Preserve -- has been enhanced by th…Full review by illinoistravelere
Periodical cicadas are small, plant-eating insects that live 13 or 17 years. They spend 17 years underground as nymphs, drinking sap first from grass roots, then...
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