In pictures: Thracian riches

1 of 6 Thracian riches are buried in ancient mounds across Bulgaria. Excavations have helped add colour to the history books.

2 of 6 The tomb of what is thought to be a Thracian king found near Zlatinitsa included two horses and a dog.

3 of 6 The artefacts were intricately decorated with scenes of Greek mythology, giving clues to the man's identity.

4 of 6 The pottery and artefacts, often featuring animals, helped date the burial to around 360-370 BC.

5 of 6 Professor Bojidar Dimitrov, of Bulgaria's National Museum of History, says the man was a young ruler in his prime.

6 of 6 It is not known how he died or exactly who he is, but researchers will continue to examine the clues.