Yes
Most of the times they allow. But one has to be very careful while walking with the tripod in hand.
Yes. Most of the times it is not an issue... But it all depends on the administration manager of the day!!!! Hope you enjoy the beauty of the Caverns, with a tripod...
Yes. Guide will give you few minutes at every stop to take pictures. But try not to lose the group.
Yes you can but you have to be very careful that in many places surface are uneven due to the nature of the place.
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