They used to bury rich hoards of precious objects both to hide them in times of enemy invasions and unrest as well as for ritual purposes. To date, more than 80 Thracian treasures have been excavated in Bulgaria, the cradle of the Thracian civilization.
The passage describes the historical practice of burying valuables for both security and religious reasons. The discovery of over 80 Thracian artifacts in Bulgaria highlights the significance of this ancient civilization.