Unless you’re an enthusiastic speleologist, you might think of caves as prehistoric; places our distant ancestors used as shelter, that we now only visit to see primal cave paintings and impressive stalactites. But South-East Asia’s relationship with caves is far from extinct.
Many of the region's ancient cave temples are still active sacred sites, and its complex subterranean systems protected thousands of people during 20th century conflicts. Some are geological world-record holders, still being discovered by scientists. A number of them are also open to visitors, so we’ve selected the six most impressive that you can explore.