Winter is an especially beautiful time to visit the diverse State Parks of Massachusetts. Being able to identify the tracks and sign of wildlife along the trail will enhance your experience of the natural world. Join wildlife expert Bob Metcalfe, at the Tsongas Gallery in park headquarters, for an indoor lesson in track identification, followed by a two hour walk into the woods of Walden to search for wildlife tracks and sign. This program is for ages five and up. Don’t forget warm clothes and boots.