The sweet relief of watching your luggage appear on a baggage carousel, as it rises out from beneath the underworld of an unfamiliar airport, is an experience every traveller has felt at one point or another.

But how does your baggage make it from the check-in desk to your final destination? And what happens if you're one of the unlucky passengers whose luggage gets lost along the way?

Aalia Adam explores how airlines rely on tags, bar codes and networks of conveyor belts to transport suitcases around the globe, and finds out where luggage goes when it misses its connection.

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