Ice cave, proglacial lake and insulating coverIn order to extend the usable time at the artificial ice cave at Rhonegletscher, the area covered by an insulating blanket has recently been enlarged considerably. | |||
 Repeat photos of the growing proglacial lake in 2007 (top), 2016 and 2021 (bottom). |  Parts of the ice tunnel are no longer ice-covered, but are still under the insulating blanket (July 27th, 2021). |  Detail in translucent glacier ice: centuries old ice with air bubble inclusions. |  Some of the insulating material now ends up in the proglacial lake and gets covered by glaciofluvial sediment (July 27th, 2021). |
 Aerial photo looking upglacier; proglacial lake and area of ice cave below (July 27th, 2021). |  Vertical view of the area of the ice cave, with insulating cover; north is to the left (July 27th, 2021). |  Snout of Rhonegletscher with covered section and the proglacial lake, which has grown further (1, July 27th, 2021). |  Snout of Rhonegletscher with covered section and the proglacial lake, which has grown further (2, July 27th, 2021). |
| Photos Jürg Alean | |||