There’s at least one great thing about super frigid weather, at least if you visit Apostle Islands National Lakeshore in northern Wisconsin. Nearly 100,000 people have walked across frozen Lake Superior, iced solid enough this year for the first time in 5 years, to see a winter wonderland of frozen waterfalls and dazzling ice formations inside ice caves that are sea caves in the warmer months. Photo #1 by turn off your computer and go outside