EXPLORATIONS NEAR STAROSEL (Chavdar Tzochev – tzochev@gmail.com, Diana Dimitrova, Daniela Stoyanova) Details of the architecture of the krepis surrounding Chetinyova Mogila Tumulus were documented. The krepis was excavated in 2000 when a Thracian monumental tholos tomb of the last decades of the 4th century BC was discovered in the tumulus. In 2019, two sondages were carried out in the periphery of the tumular embankment. Sondage 1 was situated in the eastern periphery of the tumulus where the structure of the krepis was highest, c. 7.50 m in height. The explorations confirmed that the krepis was built of several circular rows of granite ashlars. The ashlars of the face row and the first inner row do not overlap. Almost all ashlars from the face row had beds to accommodate iron П-like clamps on their upper sides. Some ashlars from the facing row were placed transversely, thus serving as a constructive connection between the structure of the face row and the first inner row of the krepis.