The glacier is mainly fed by precipitation falling directly onto its surface; it is also supplied with snow from avalanches that sweep down from the rocks of the Zugspitzeck and the Schneefernerkopf. The velocity at which the glacier moves is only about per year in its central section and there is hardly any movement of glacial mass at lower altitudes. On the steep flanks of the Schneefernerkopf the flow rate can be several metres per year, but here the glacier has all but disappeared in recent years; its remnants are covered by gravel and very little accumulation takes place.