Explored a couple of the Murrawijinie Caves on the Nullarbor today. The one I really wanted to see will have to wait for another trip. I was on my own and the entrance really requires two people or more to descend safely. One wrong move and I would be spending a few days stuck down a hole.
Anyway, the caverns were enormous. Easily 60 feet across and 12 feet high. All hidden out amongst the flat landscape. Thousands of people passing along the Eyre Highway a few kilometres away, none the wiser to these natural wonders and underground lakes.