Visually impressive, sure! I was startled and fascinated by their constant, changing soundtrack, so unexpected from this vast frozen panorama of limitless shades of blue ice formations. Shifting, moving, sometimes calving in great, majestic glacial chunks. Our first views were of the Perito Moreno Glacier in El Calafate Argentina’s Los Glaciales National Park with an ice field that controls the world’s third largest reserve of fresh water! Once every four …