WFG 032 Animal tracks across the frozen surface of 91st Street Marsh. Waterfall Glen Forest Preserve, DuPage County, Illinois.
Waterfall Glenforest preserveILIllinoisMidwestnatureoutdoorsoutsideDuPage Countylandscapescenicwinterseasonmarshpondwetland91st Street Marshsnowicefrozenshorelinetracks