Bosnian Pyramids

Hills near Visoko, said to be the largest pyramids on Earth — and still humming.

Semir Osmanagić has excavated Visočica hill since 2005, claiming the world's largest pyramid plus tunnels with 'healing' ultrasound. The European Association of Archaeologists called it a 'cruel hoax'; geologists identify natural flatiron formations. It remains the field experiment in how a claim, tourism economy, and volunteer excavation can sustain themselves against unanimous expert opinion.