<sod>Since the last glaciation, the glacier generally retreated. However slight climatic changes happened and, in 1860, the glacier was 3&nbsp;km longer and the ice level 200 m higher.<ref>[http://www.pronatura.ch/aletsch/dokumente/glacier_fr.pdf Le Grand Glacier d’Aletsch] pronatura.ch</ref><eod>
<sod>Since the last glaciation, the glacier generally retreated. However slight climatic changes happened and, in 1860, the glacier was 3&nbsp;km longer and the ice level 200 m higher.<ref>{{cite web |url=http://www.pronatura-aletsch.ch/global-warming |title=A glacier starts to melt... |publisher=Pro Natura Center Aletsch |location=Riederalp, VS, Switzerland |website=pronatura.ch |accessdate=2016-03-18}}</ref><eod>