Scientists hope to find ancient pyramid in Bosnia

Initial research on the hill, known as Visocica, found that it has perfectly shaped, 45-degree slopes pointing toward the cardinal points and a flat top. Under layers of dirt, workers discovered a paved entrance plateau, entrances to tunnels and large stone blocks that might be part of a pyramid's outer surface.

Satellite photographs and thermal imaging revealed two other, smaller pyramid-shaped hills in the Visoko Valley.