Jenny Kane - jkane@shawmedia.com McHenry County Conservation District volunteer Warren Spencer, of Crystal Lake, helps Avery Ochwat, 6, of Cary, drill a hole into a stump. Spencer explained to groups at the Festival of the Sugar Maples the proper size that a hole needs to be in order to get sap from a sugar maple tree at the Coral Woods Conservation Area in Marengo.
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