SOFIA, BULGARIA—Archaeologists continue to make new discoveries at the spectacular site of Sveshtari, a third-century B.C. tomb complex in northeast Bulgaria built by the ancient Thracian people the Greeks knew as the Getae. First discovered in 1982, the tomb's central chamber features the relief carvings of ten half-human, half plant female figurines. According to archaeologist Diana Gergova, recent discoveries include evidence for animal sacrifice at the site, as well as a golden casket that was laid to rest on a tree in one of the tombs.