The Pines Area Medical Development Association (PAMDA) Penguin Plunge will take place Saturday in front of the Visitor's Center on Birch Lake as part of the annual Back to Hack winter celebration in Hackensack. All proceeds from this event benefit the Essentia Health Hackensack Clinic. Registration begins at noon and jumpers take to the frigid waters beginning at 1 p.m. This is only one of many events for visitors to enjoy throughout Hackensack Thursday through Sunday. File photo.