Nicknamed the "Galloping Glacier," this east Alaskan glacier is rapidly advancing toward the Gulf of Alaska into a pristine area known as Disenchantment Bay. In fact, its movement temporarily formed a natural dam that twice closed off nearby Russell Fjord from the bay, but the intense water pressure building within the fjord-turned-lake has thus far been enough to explode through the wall of ice.

The largest tidewater glacier in North America, Hubbard Glacier measures 76 miles long and plunges 1,200 feet into the depths of the bay. Its immense beauty and phenomenal blue hues are enchanting, even from afar. But it's when your cruise ship draws closer that its towering surface really impresses, dwarfing even the uppermost deck on your ship at a whopping 40 stories high. There, with the snowcapped mountains serving as a glorious backdrop, you'll have a prime viewing spot from which to witness the glacier calving, as it often expels icebergs the size of 10-story buildings-imagine the splash!

The area around Hubbard Glacier is also renowned for its wildlife, where whales, harbor seals and otters swim, brown bears, moose and black-tailed deer roam ashore, and a wide variety of seabirds soar gracefully across the sky.