Grosser Aletschgletscher, looking towards Jungfrau and Mönch in 1880 (upper photo) and 2015 (lower). In the old photo, the glacier surface was close to its maximum level of the Little Ice Age (1880: ETH-Bibliothek Zurich, Bildarchiv, photographer: Francis Frith, Hs_1458-GK-B005-1880-0001, PD, 2015: Alean).