The Tomb of Seuthes III is located near Kazanlak, Bulgaria. Seuthes III was the King of the Odrysian Kingdom of Thrace from c. 331 to c. 300 BC and founder of the nearby Thracian city of Seuthopolis.
It is one of the most elaborate tombs in the Valley of the Thracian Rulers.
The Thracians (/ˈθreɪʃənz/; Ancient Greek: Θρᾷκες, romanized: Thrāikes; Latin: Thrācēs) were an Indo-European speaking people who inhabited large parts of Southeast Europe in ancient history. Thracians resided mainly in Southeast Europe in modern-day Bulgaria, Romania, North Macedonia, northern Greece and European Turkey, but also in north-western Anatolia (Asia Minor) in Turkey.
The exact origin of the Thracians is uncertain, but it is believed that Thracians like other Indo-European speaking groups in Europe descended from a mixture of Proto-Indo-Europeans and Early European Farmers.
Seuthes III (Ancient Greek: Σεύθης, Seuthēs) was a Thracian king of Odrysia, a part of Thrace, during the late 4th century BC (securely attested between 324 and 312 BC).