The treasures of the Tracian era have been discover over recent years. Treasures in Bulgaria are still waiting to be found. In this video which is accompanied by tradition Bulgarian folk music. It give a good indight as to the types of treasure found and the tombs that were excavated and now recorded in Bulgaria's rich history.
The archaeological research of the Thracian culture started in the 20th century and especially after World War II, mainly on the territory of Southern Bulgaria. As a result of intensive excavation works in the 1960s and 1970s a number of Thracian tombs and sanctuaries were discovered. More significant among them are: the Tomb of Sveshtari, the Tomb of Kazanlak, Tatul, Seuthopolis, Perperikon, the Tomb of Aleksandrovo, Sarmizegetusa, etc.
This is part of a revealing information about the video taken from http://www.youtube.com/watch?v=jnY0knx2lb0 - Well worth reading the full account.