First Aired: Mar. 26, 2006 on BBC One
Summary: David Attenborough looks at the world's caves, including the Lechuguilla Cave in the USA which contains chambers filled with six-metre-long crystals. Inside Deer Cave in Borneo he finds five million bats, whose droppings support an entire ecosystem, and observes creatures in Texas and…
Series Main Characters
- The cave crew had to spent a whole month filming on the world's largest pile of poo (actually bat guano) hosting thousands of cockroaches crawling into every corner of their clothes.