TskaltuboRioni Region of Georgia.
Former Sanatorium "Iveria"The building is fenced but there are many openings, try the most distant side of the fence.
ChimneyThe descent is only possible with a 30-50 m rope.
TunnelBring a good torch or head lamp
address: located in village KumistaviOne of Georgia’s longest natural caves, with fabulous stalactites and stalagmites and underground lake. Take warm clothes. Beware, some travellers have complained that it is just an expensive tourist trap. Often you have to go in a large group (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.
Cracked Rock LakeFor the descent you need ropes longer than 30 m or decent climbing experience. Otherwise, it is a nice view from the top.
Okatse CanyonAnother (beside Prometheus) overhyped tourist destination around Kutaisi. 700 steps to climb, so be aware. Generally, the canyon is beautiful and nice to see, but the prices are a little overdrawn, considering the other prices in this country. You can go in by 4WD, if you have.