Named after the village in which it is found, “Vratnica Tumulus‟ is of a similar conical shape and size to the famous tumulus “Silbury Hill‟, located in Wiltshire, UK.
Unique however to the Visoko complex is the fact that the three main Pyramids each have one of their sides built into the landscape surrounding them, providing an “access plateau‟ to their peaks, which is unlike the common “free-standing” pyramid design seen elsewhere around the globe.Confirmation of the Bosnian Pyramids exactitude with geographic North has been obtained by both topographic mapping and satellite imagery. Amer Smailbegovic using the “Automated Linear-Anomaly Detector” satellite system, used for measuring tectonic lineaments, confirmed break angles of 43.822 degrees ( /- 1.6) at three of the undamaged corners (Figure 2).This structure has a form similar to that of a crescent moon or amphitheatre and is of an impressive size, equalling that of its neighbouring Pyramids.Surrounding the Bosnian pyramid complex are also numerous, more modestly sized supporting structures including mounds and tumuli, the most accessible of which is found several kilometres North East from the centre of the pyramid complex.In their statement it read, “This [Pyramid] scheme is a cruel hoax on an unsuspecting public and has no place in the world of genuine science.”.
However, despite the barrage of strong condemnation Osmanagic and his team have continued investigating the sites around Visoko for a further eight years.
Because of the shear size of the site, as it stands today the meticulous work undertaken by Dr Semir Osmanagic has resulted in less than 1% of the Pyramidal structures to have been so far uncovered, leaving much of the evidence which would support Osmanagic‟s theory still buried beneath the soil.
With limited financial backing from the local Bosnian government, Osmanagic relies substantially on an international team of volunteers which make their way to Visoko each summer to assist with the excavations.
In 2006, after initial probing and surveying, Osmanagic created the not for profit, “Bosnian Pyramid of the Sun Foundation” and in the summer of that year large scale excavations began.
Almost immediately after Osmanagic started his project the authenticity of his miraculous find was to be called into question.
The exception is the South West corner of the Sun Pyramid, having become eroded in recent times, possibly due to the presence of an abandoned quarry where material was extracted from.