18 juillet 2015
Bulgaria's Valley of Thracian Kings, accidentally discovered in 1944, keeps its secrets
This picture taken on May 20, 2015 shows a detail of a mural in the burial chamber in a replica of the Thracian tomb of Kazanlak, dated back to the 4th century BC in the central Bulgarian town of Kazanlak. Experts say there are a total of over 15,000...