Bosnian PyramidsThe Bosnian Pyramid of the Sun, with its’ height of 220 meters, it’s much higher than the Great Pyramid of Egypt, which was originally 147. The Bosnian Pyramid of the Moon, 190 meters, also higher than the Keopsove Pyramid. The third, the Bosnian Pyramid of the Dragon, with the other two – the sun and the moon – form the perfect triangle with the distance of 2.2 kilometers.

The 45-year-old is so certain two pyramids are hidden in Visoko valley that he has spent some 16,000 euros (20,000 dollars) researching the area, located either side of a river about 30 kilometres (18 miles) from the Bosnian capital.

Residents of the nearby town of Visoko have long known about the presence of the two structures they always referred to as 'pyramids' but none of them was ever intrigued enough to investigate further.

But Osmanagic, who says he sharpened his eye for archaeology on numerous trips around the world to study ancient civilisations, insists the structures "cannot be the art of nature".

Watch the full documentary now