Mountains

Lucy Cooke and Colin Stafford-Johnson continue their exploration of the UK's wildlife with a look at our mountains.

Lucy tries to track down a seriously clever crow - the raven - while Colin travels to the wild lands of Snowdonia to discover how this dramatic landscape was formed.

The programme also discovers how the mountains of Scotland have become the playground of golden eagles, and investigate whether the UK will ever again play host to a long lost beast – the lynx.

Plus the team go behind the scenes with the Wild Alaska Live team, as they search for the walrus.