There are tours and they run every 20 minuets if it's busy, otherwise whenever you get there the person at the desk will take you in for a tour straight away
The guide gives a history of the cave and then a short talk once you are inside, and points out the different named formations. The tours go every 20 minutes, but if you show up and there is no-one else waiting you can go immediately.
Yes, there is a brief tour which run quite frequently - I think twice an hour. As the cave is a single, large cavity you really don't *have* to take the tour but it is nice to do (and very affordable).
We turned up in the afternoon. We paid and there were several other people there. We waited about 15mins and they took us in as a group. They tell you about the history of the cave and then let you roam yourself. A smaller cave. Web MountGambier com au. Hope this helps.
Yes the only way to see the cave is with a guide. It is only one enormous cave so the guide explains how it was discovered, why it is unique and geographical details. I thinks the tours run regularly throughout the day. It is well worth it.
Yes the National Park guide waited until there was enough of us there and then took us in and told us the facts and left us to our own devices. Was good. I did see after we were there a while she then brought a couple in on their own. We were there on a weekday, which is probably not as busy etc
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