JOKULSARLON GLACIAL LAGOON, ICELAND

THE ice washes ashore from the Breidamerkurjokull glacier, an outlet of the vast Vatnajokull glacier, which tumbles into the 932ft deep lagoon. It’s popular with tourists and film-makers – two Bond movies have been filmed here.

The ice takes 800 years to travel down the glacier to the water, so a piece you pick up on the beach probably first fell as snow not long after King John signed the Magna Carta. Which is cool.

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