Bosnia and Herzegovina’s historic Kastel Fortress is one of the rare locations in Europe with layers dating from the early Stone Age (before 10,000 years BC) through multiple eras leading up to the 20th century. The latest round of excavations at the site revealed the presence of an ancient necropolis of an undetermined age, as radio-carbon dating will need to be conducted to determine the cemetery’s true antiquity. In addition, the archaeologists involved in this discovery also found an ancient coin, which they’ve been able to date all the way back to the 4th century BC. Following the Excavations: A Mish-Mash of Many Layers As one of the most visited sites in central and eastern Europe, the fortress at Kastel is now the national monument of Bosnia and Herzegovina, and the oldest historical monument in the city of Banja Luka, which is located in the thickly-forested Bosanska Krajina region of northwestern Bosnia. Kastel is believed to have been constructed over the remains of a Roman settlement known as Castra. Excavations were first carried out there in the 1980s, and over the years they have followed both an interesting and unusual trajectory. Read moreSection: NewsHistory & ArchaeologyAncient PlacesEuropeRead Later