The air gets chillier as the small, open train takes us through a tunnel of rough rocks into the underground. The tunnel opens up onto a new world full of limestone formations, stalactites hanging from the ceiling, stalagmites growing up from the ground, free standing pillars and curtains clinging to the wall. Some are lit up by strategically placed lamps while others lay in shadow, creating a captivating play of light. Some times the train winds through narrow passages that then open up into large caverns. The landscape is fascinating for an inexperienced spelunker like me, just too bad there are too many other tourists in here. The forbidding of photography is also a bit annoying so this will have to do.