Switzerland converted military tunnels in the Alps into gold vaults during World War II, hiding its reserves beneath solid rock as Europe descended into war

As Europe edged toward World War II in 1939, Switzerland was faced with a dilemma that went far beyond defending the country's borders, with them needing to safeguard one of its most strategic assets, that is, the gold reserves. New historical research shows that the Swiss National Bank responded to this apprehension by moving large quantities of gold into fortified Alpine infrastructure, thus transforming a military ammunition depot carved into the Bernese Alps into a highly secured underground vault.

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