Freeze for a Reason this Season! The 2019 Polar Plunge, benefitting Special Olympics Indiana, will celebrate the 50th Anniversary of SOI. Registration is from 10:30 a.m. – 11:30 a.m. on Feb. 16 at the Center Lake Pavilion. The Plunge will take place at noon in Center Lake with the After Splash Bash following, with chances to win awards and prizes! To participate, each individual must raise at least $75 in pledges. All funds benefit Special Olympics Indiana.