Info from YouTube:
""A glimpse of light" is recorded in an ice cave underneath the amazing Nigard Glacier(Jostedalen) in Norway. This video clip is a part of a portrait of Terje Isungset made by French TV in 2014.
Lena Nymark: voice, Terje Isungset, ice, Bernard Svidal: ice carver, Tor Magne Hallibakken: sound engineer".
Please don´t try to go under a glacier on your own! OK?