From pebbles in the underground tunnels "Ravne" to concrete blocks of the Bosnian Pyramid of the sun
Dr. sci. Semir Sam Osmanagich
Hundreds of thousands of tons of conglomerate material were extracted under the Bosnian Valley of the Pyramids during the construction of underground tunnel network; Conglomerate material, pebbles of various size and origin, was completely used in construction of hundreds of thousands of tons of concrete blocks that coat the Bosnian Pyramid of the Sun. So, there was no waste of the material during th process.