Hubbard Glacier, located in Yakutat Bay and Disenchantment Bay, Alaska, is the largest glacier in North America, with a calving front that is more than nine kilometres wide and a main source for the glacier located over 120 kilometres inland. Named after Gardiner Greene Hubbard, the first president of the National Geographic Society, it has been a very active glacier, experiencing two major surges in the past 30 years. Travellers have a chance to watch this spectacular glacier calve massive ice chunks into the water creating large icebergs.