#9 Europe Chapter 2 : Dachstein ice cave, is it worth?

This is the reason i brought 2 bulge things in my backpack. 1# is my hiking booth, and 2# is big heavy jacket. I want to visit Dachstein ice cave!! According to the web, i need to wear robust shoes and warm clothing, as the temperature would go from below 0 to maximum 4 Celsius….