Bulgaria, Ostrusha ancient Thracian tomb

The Ostrusha mound is a Thracian burial tumulus near the Bulgarian town of Shipka. It was constructed in the middle of the 4th century BC. The stone structures under the more than 18 meters high mound form one of the biggest representative tomb-cult complexes with 6 rooms on an area of 100 square meters. It was professionally excavated in 1993.
One of the chambers is fully maintained. It is made of two carved-out solid granite blocks, weighing a total of more than 60 tons.