Taken in the Jenolan Caves in Australia. I have to say that for me personally, exploring caves is one of my least favorite activities, although this was my first attempt. I was in a group of about forty people and we were nose to butt climbing the 900 or more stairs. It was cold, then it was hot, it was sticky then clammy and I bumped my head quite a few times. But I am glad I had the experience. I'll try almost anything one time.