There isn’t a great deal of flora within the Tú Làn caves, but you’ll encounter plenty of fauna. Don’t be put off by Rat Cave – it’s named after the shape, not the inhabitants. You won’t find rats anywhere in the system but expect bats that dart and squeak above your head. You also come into contact with bizarre insects and translucent fish that have evolved to survive in the darkness.
In between caves you might encounter multicoloured spiders, fluffy centipedes, or oversized worms. You can only find these mesmerising tropical critters deep in the jungle. Just be sure to look, not touch.