There are six experience rooms, from a candle-lit underground cave pool to a volcanic salt bath.

She was described as looking pale and thin after coming out from the underground cave.

The area also contains several sinkholes and underground cave systems, including a 38acre m2 sinkhole lake.

While no sightings were reported on the expedition, the team found evidence of a large underground cave with air vents.

Needing humidity for the weaving his house had a special half- underground cave like area where he worked.