Visitors hiking through Blackwell Forest Preserve in Warrenville walk on land that the retreating Wisconsin Glacier shaped 12,000 to 15,000 years ago. In fact, the glacier’s meltwaters left behind much of the soil that covers DuPage County today. After the glacier’s retreat, savannas with widely spaced oak trees formed on the higher ground while the lower-lying ground became home to marsh and prairie plants.
Thursday, Oct 6, 2022 at 1:00 p.m.
CENTENNIAL ACTIVITY CENTER
PARK RIDGE, IL
Monday, Oct 10, 2022 at 10:00 a.m.
SCHAUMBURG TOWNSHIP DISTRICT LIBRARY
Tuesday, Oct 11, 2022 at 11:00 a.m. Central Time
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