Exploring an ice cave in the Jura mountains of Switzerland. Light enters through a vertical sinkhole at the back. Such ice caves form where cold winter air gets trapped and causes meltwater to freeze in summer. The body of ice underneath the observer is dozens of metres thick. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Alean, Dr. Juerg |
Bildgröße: | 6720 px × 4480 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |