A sure sign of spring is the annual tapping of sugar maple trees at Ryerson Woods in Riverwoods.
Saturday was the final weekend of the season for the Lake County Forest Preserve District's annual weekend maple syrup hikes. Participants learned how sap from the sugar maple trees is turned into sweet syrup, then tasted the final product during the one-hour hikes.
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Ryerson Woods is one of a few local areas where climate conditions are right for maple syrup production, and where the trees grow to a diameter and height that allows for tapping. Syrup production only happens in late winter and early spring.