With eyes trained to recognize pyramids hidden in the hills of El Salvador, Mexico and Peru, Semir Osmanagic has been drawn to the mound overlooking this central Bosnian town.
"It has all the elements: four perfectly shaped slopes pointing toward the cardinal points, a flat top and an entrance complex," he said, gazing at the hill and wondering what lies beneath.
No pyramids are known in Europe, and there is no evidence any ancient civilization there ever attempted to build one.
But Osmanagic, a Bosnian archaeologist who has spent the last 15 years studying the pyramids of Latin America, suspects there is one here in his Balkan homeland.
Still needs work.