The world's mostly southerly herd of reindeer is to be culled to try to save the environment of the island of South Georgia.

BBC: South Georgia prepares to cull its invasive reindeer

The Habitat Restoration Project on the Atlantic island of South Georgia aims to wipe out millions of rats that first arrived on sealing and whaling ships.

BBC: Rat eradication project on South Georgia set to resume

For ground-nesting birds like the South Georgia pipit and South Georgia pintail, both of which are unique to the island, the rat explosion spells disaster because the rats feed on chicks and eggs.

BBC: Rat eradication project on South Georgia set to resume

The navy's Portsmouth-based ice patrol vessel sailed to South Georgia as part of its support of environmental work on the island, and the stone was finally returned.

BBC: Stone returned to Ernest Shackleton's grave after 75 years

Clearing an entire island of an invasive species is hugely ambitious but the terrain of South Georgia allows the team to work in stages.

BBC: South Georgia rat cull begins again

For sheer remoteness and scenery, visit South Georgia, a narrow, 106-mile-long, snow-covered, glacier-strewn, unpopulated island with two majestic mountain ranges.

ECONOMIST: Icebergs ahoy | The