Are you struggling in the summer heat? Let’s flashback to December and take a mental stroll through the ice caves at Apostle Islands National Lakeshore in Wisconsin. Accessible by foot when Lake Superior freezes over – which doesn’t happen every year – the caves are like a palace decorated with hanging blue ice formations. It’s a very cool experience. Photo by Wan Shi (http://ift.tt/18oFfjl).
Sig Nordal 