
The Swiss are mainly known for clocks, chocolate and skiing - but military guile can also be added to that list, as these amazing images show.

Photographer Leo Fabrizio, over a period of years, discovered remarkable camoflaged bunkers that blended into Switzerland's fields, mountainsides and woodland.

He said, as reported in polarinertia.com: 'The bunkers are an integral part of a finely developed popular defense military system in Switzerland, a military with historically strong links to the landscapes.'

Fabrizio, whose pictures of the constructions appear in 2004 book Bunkers, added: 'After the cold war ended many of the bunkers became obsolete. The tendency is to forget them or even to renounce them, my approach on the contrary, aims to expose them from a new angle.'

The Swiss were so determined to make the bunkers' cloaking effective that artists and theatre set designers were even brought in to oversee the assembly process.

Here we showcase some of Mr Fabrizio's images, which show that the Swiss truly were masters of disguise.

The Swiss are mainly known for clocks, chocolate and skiing - but military guile can also be added to that list, as these amazing images show

There is more to these concealed chalets than meets the eye, as they are not quaint lodges but military bunkers in disguise

The Swiss used artists and theatre set designers to ensure that the bunkers blended in with their surroundings

This bunker has been cleverly blended into a moutain rock face, with the door frame only just visible to the naked eye

Fabrizio said 'the bunkers are an integral part of a finely developed popular defense military system in Switzerland, a military with historically strong links to the landscapes'

The Swiss are known as expert clock makers, but these images show that their military guile is also noteworthy

Troops were able to hide in the bunkers knowing that their enemy would need to be extremely lucky to spot them

Many Swiss residents had no idea that there were hidden bunkers situated in the middle of their villages

A requirement of the chalets was that they could deceive the human eye at a minimum distance of 20 metres

Up close and it's clear that this is a bunker, but from a distance, it would be very difficult to determine its true purpose

Fabrizio's pictures appear in 2004 book Bunkers - a publication that took years to put together