Brüggen Glacier, also known as Pío XI Glacier, is in southern Chile and is the largest western outflow from the Southern Patagonian Ice Field. Now about in length, it is the longest glacier in the southern hemisphere outside Antarctica. Unlike most glaciers worldwide, it advanced significantly from 1945 to 1976, Brüggen surged across the Eyre Fjord, reaching the western shore by 1962 and cutting off Lake Greve from the sea. The glacier continued advancing both northward and southward in the …