The ‘Bosnian pyramid complex’ is a pseudoarchaeological notion to explain the formation of a cluster of natural hills in central Bosnia and Herzegovina. Since 2005,Semir Osmanagić, also known as Sam Osmanagich, a Bosnian businessman now based in Houston, Texas, has claimed that these hills are the largest human-made ancient pyramids on Earth. His claims have been overwhelmingly refuted by scientists but he has proceeded to promote the area as a tourist attraction.
Direct study of the site by geologists, archeologists, and other scientists have demonstrated that the hills are natural formations known as flatirons[4] and that there is no evidence that they were shaped by human construction.The European Association of Archaeologists has condemned the so-called ‘Bosnian pyramids’ as a "cruel hoax"; they are also concerned about damage being done to genuine archaeological sites: a medieval Bosnian capital, Roman fortifications, and some even more ancient remains.
Osmanagić initiated excavations in 2006 and has since reshaped one of the hills, making it look like a stepped pyramid.The academic community has called for the government to end funding of excavations and disruption of the site because of the damage to true archaeological resources.