Long Lake Park Harwood Avenue Parking Area Location Harwood AvenueLittletonMA01460 Next Event Long Lake Park Bluebird and Tree Swallow Nestbox Walk - Saturday, June 10, 2023 - 9:00 am - 10:30 am Upcoming Events Long Lake Park Bluebird and Tree Swallow Nestbox Walk - Saturday, June 10, 2023 - 9:00 am - 10:30 am