Whilst carrying out this assignment for National Geographic Magazine, we observed that the ice formations inside Eiskogelhöhle in Austria (pictured) have not changed much at all since my first visit there in 2013. The volume of ice is still much the same. The reason for this remains unknown, but one possible theory could be that due to its high elevation, this cave carries cooler winds throughout the year and never really gets warm enough to melt the ice. After all, it is over 500 metres higher than Schwarzmooskogel, which is melting very very fast.
