One day a shepherd from Nevesinje threw his staff into the Zalomska river, and his father, a miller accidentally saw it coming out of the Buna river that rises out of a cave in Blagaj. The father couldn’t believe his eyes and went to his son to tell this mysterious appearance. Together they followed the Zalomska river until it supposedly disappeared into a mountain hole some thirteen miles east of Blagaj. Father and son then determined to put this discovery to a profitable use. Every day, the shepherd killed a sheep and threw it into the river and the father would pick it up the next day in the Buna. The shepherd, when questioned about the mysterious diminution of his flock, always blamed the wolf, but at last the proprietor became suspicious and watched him. One day he detected the shepherd in the act of throwing the sheep into the river and the next morning the miller at Blagaj, instead of the usual sheep, fished out of the Buna the body of his son.
At the end of the 19th century Bosnia and Herzegovina was governed by the Austrian empire. From the very beginning they sent out a group of archaeologists to search for a common heritage. This to improve the strategically valuable region and stop the ethnic tensions.
After months of disappointing results in the upper north of the country, they continued their journey towards Sarajevo. Before passing the town of Zavidovici an old carpenter directed them inside a deep forest where they came across mysterious stone spheres. Surprised by their findings, the archaeologists immediately reported their discovery to Vienna.
The government couldn’t explain this mystery but was eager to to make of these discoveries a profitable heritage. This by turning the country into an archaeological park where a culminated number of artifacts could be discovered by future tourists.
Inspired by the shepherd legend they started building artifact factories in the Zalomska valley. Pipelines were laid from the factory all the way to the mountain hole, discovered by the shepherd and his father. A few months later, without anyone
noticing, the first batch of created stone spheres were pushed through the pipelines in 1890 and appeared two hours later out of the cavern in Blagaj.
Citizens were told to share the following story: the spheres had appeared after a strong storm in the beginning of the 19th century. There was an overflow of the river and the water created a small gully, in which the stone spheres had appeared and rolled down the hill.
For months, the archaeologists continued their expedition and found many other peculiar artifacts, such as a valley of pyramids around the town of Visoko. The project gradually came to and end with the downfall of the Austrian empire.
In 2005, a Bosnian citizen named Dr. Sam Osmanagich returned to his country after the Yugoslav wars and revived the story by claiming the Bosnian Pyramid of the Sun is the largest human-made ancient pyramid on the planet. More, he discovered an underground tunnel network which is 2,5 kilometer away from the Pyramid of the Sun. When the tunnel was firstly discovered, people called it a cave as it looked like a hole in a hill. However, this would later become one of the most mysterious tunnels in the world.