The caves themselves were incredible, excavated from the limestone rock by the actions of water over a timescale that I find it very hard to get my head around. The cave's human inhabitants only seem to have lived, or at least only left archaeological evidence, as far as what's been termed the Daylight Zone, the area by the cave entrance that sunlight can reach. And honestly I can see why, the smoothed limestone can look unsettlingly organic and the place is very eerie even by artificial light with lots of galleries of unknown depths branching off at all angles and holes in which all manner of imagined dangers could be lurking.