Schoch also claims that possibly all pyramids — in Egypt, Mesoamerica and elsewhere — represent, with other cultural commonalities, a much older global culture, either through common inheritance or ancient cultural contact around the world. In 2006, at the invitation of the locals, he investigated the so-called Bosnian pyramid excavations north of Sarajevo, but he concluded that the site held "absolutely no evidence of pyramids per se or of a great ancient civilization in the Visoko region."[10]