Malko Tarnovo
The Thracian necropolis of Propada, to the north-west of Malko Tarnovo, contains 40 burial mounds on a hill made of marble blocks. Coins discovered during the excavations prove the practice of Charon's obol. The ritual constitutes a coin being placed in or on the mouth of the dead person before burial as a payment for Charon, the ferryman who conveyed souls across the river that divided the world of the living from the world of the dead. The top of the hill is crowned by a small domed tomb with similar construction plan to those of the Thracian tombs of Kazanlak, Aleksandrovo, Mezek, etc. The necropolis was active until the 4th century AD. Another sanctuary of interest is situated in Kamenska Barchina, from Malko Tarnovo. It is located in an area of conglomerate rocks, which are relatively rare in Strandzha. There are many circles carved in the rock, associated with the sun cult and the preparation of sacred wine.