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Take a look at the underground bunkers and shelters that were made to prepare Switzerland for war

When it comes to describing the Swiss' determination to prepare for the worst case scenario, no idiom rings truer than: "In time of peace, prepare for war".

Of course, Switzerland hasn't been engaged in a military conflict for over 150 years, but hidden beneath the country's surface is a vast network of military bunkers and fallout shelters that exist to protect the Swiss people from potential onset of war and nuclear devastation.

Although the exact number of military bunkers is not known, a common estimate is that there are around 20,000 bunkers dotted around Switzerland to thwart any oncoming army.

Add that to the near 310,000 private and public fallout shelters and you have a country that can potentially protect all of its 8 million citizens from nuclear war, making Switzerland the most prepared nation in world for this destructive scenario.

A photographer calling himself Kecko has chronicled some of the most interesting bunkers and shelters in Switzerland, here's a few of our favourites: