Young Icelandic mares graze on a meadow in Wehrheim near Frankfurt, Germany, on a foggy Tuesday, September 26, 2023. (Photo by Michael Probst/AP Photo)
A tourist walks inside the Ice Palace glacier hollow at Hintertux glacier, located at around 3250 meters above sea level, in Zillertal, Austria, 02 March, 2016. The hollow's temperature remains constant at 0 degrees Celsius, in summer and winter alike, and is also used by the University of Innsbruck for scientific research projects. (Photo by Lisi Niesner/EPA)