Dr. Sam Osmanagich is either an ambitious maverick archaeologist, or a pseudoarchaeologist, depending on who you ask. He is the man who has spent the past decade trying to convince the archaeological community that a cluster of what are believed to be naturally-occurring hills in central Bosnia and Herzegovina are actually the largest human-made ancient pyramids on Earth.

He has named the largest of the structures the Pyramid of the Sun, which is more than 220m high. If his claims are true, this would make the pyramid taller and possibly bigger than the 147m-tall Great Pyramid built by Pharaoh Khufu in Giza, Egypt, currently recognized as the largest in the world. read more