Six radiocarbon analysis have determined the age of the underground labyrinth "Ravne" in Visoko
Dr. sci. Semir Sam Osmanagich
Bosnia
Summary: Six radiocarbon dating confirm existence of the four old cultures in the mid-Bosnia:
1) The Paleolithic culture;
2) Older than 5000 years;
3) Younger than 5000 years;
4) Neolithic cultures, 3000-4600 BP.