On two small islands in the middle of the Bering Strait, it’s possible to walk from the United States to Russia in midwinter.
Just two miles apart, Big Diomede and Little Diomede sit between two nations – a short distance away, but one day apart.
Big Diomede is in Russia, and Little Diomede is in the US state of Alaska.
It’s easy to forget that the two countries, which have often been at each other’s throats, are next-door neighbours.
The Diomede Islands have come into focus again recently, ahead of President Donald Trump and Vladimir Putin’s meeting in Alaska on Friday to chat about ending the war in Ukraine.
It’s not just different countries and ways of life which separate these two islands – it’s an entire time zone.
Time travel between islands
Between Big and Little Diomede lies