Hubbard Glacier, off the coast of Yakutat, Alaska, is the largest glacier in North America, with a calving front that is more than six miles wide. One of the main sources for Hubbard Glacier originates 76 mi inland. It has been a very active glacier, experiencing two major surges in the past 30 years. This glacier was named after Gardiner Greene Hubbard, a U.S. lawyer, financier, and philanthropist. He was the first president of the National Geographic Society.