Hiker on boardwalk in the snow. Photo by Monny Hjerstedt.Monny Hjerstedt. Published December 22, 2020 at 400 × 600 in Winter Hiking on the Ice Age Trail ← Previous Next → Be cautious while walking on boardwalks! With frost and freezing during the colder months some boardwalks are very slippery. Photo by Monny Hjerstedt.