Prometheus Cave is a 60 to 70-million-year-old karst cave near the village of Kumistavi, about forty kilometres from Kutaisi. The cave is forty metres deep, 1.8 kilometres in length, and has an average width of seven meters.
Prometheus Cave has twenty-two caverns of various sizes within it, six of which are open to tourists: The Cavern of the Argonauts, Kolkhetian Cavern, Medea’s Cavern, The Cavern of Love, Prometheus’ Cavern, and the Iberian Cavern.
The walking path through the caves is just under 1.5 kilometres in length, with a boat section measuring 380 metres. The boat journey is especially thrilling, as it is accompanied by atmospheric music, and the route is illuminated by mysterious lights. It feels like crossing the mythological river Styx.
The caves are home to nineteen species of aquatic plants and up to forty species of insects, invertebrates, and molluscs. Skull fragments and fossils of a cave bear, starfish, molluscs, and other animals from the Cretaceous Period have been found within the cave.