The descent is only possible with a 30-50 m rope.
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Bring a good torch or head lamp
The building is fenced but there are many openings, try the most distant side of the fence.
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One of Georgia’s longest natural caves, with fabulous stalactites and stalagmites and underground lake. Take warm clothes. For an additional fee (15 lari?), there is a short boat ride at the end in an underground river. It is necessary to purchase the boat tour when purchasing the tickets. Some travellers have complained that it is just an expensive tourist trap. Often you have to go in a large group (at least 30 people), having to wait for everyone. And also, the tour guide only explains things in Georgian or Russian. If you have seen other caves around the world before, you can probably skip this one.
Gabzaruli cavity
For the descent you need ropes longer than 30 m or decent climbing experience. Otherwise, it is a nice view from the top.