Mystery life of tunnelling animals revealed in documentary
16 August 2013 Last updated at 14:17 BST
A new BBC documentary is hoping to lift the lid on the subterranean life of rabbits, badgers and water voles.
The Burrowers has used specially built full-scale replicas of the animals' habitats, and cameras have followed their every move.
Jeremy Cooke reports.
The Burrowers: Animals Underground is on Friday 16 August at 2100BST on BBC Two