Letters from the loneliest post office in the world

THIS mind-bending optical illusion will certainly test your eyesight - and your patience.

Two prefabricated wooden buildings and a metal Nissen hut, all painted black with red trim, stand near the waters of Port Lockroy. 

A Union Jack snaps on a flagpole and casts a shadow over dozens of squat gentoo penguins idling around the hut.

In addition to the penguins, Port Lockroy, as the tiny settlement on Goudier Island is known, is home to the world’s most southerly functioning post office. 

But for some, a short tour of the world’s most isolated mail drop isn’t enough. 

But for some, a short tour of the world’s most isolated mail drop isn’t enough. 

Each year hundreds compete for four jobs at the post office, for a chance to live on an island the size of a football field for five months at a time, without internet, cell service, or even running water.