A series of impressively well-preserved mosaics were unveiled during excavations at what has been identified as the ancient Plotinopolis, situated in the outskirts of modern-day Didymoteicho, in the prefecture of Evros, northeastern Greece. Plotinopolis was a Roman city founded by Emperor Traianus, who named it after his wife Plotini.

The hill of Aghia Petra, just outside Didymoteicho, has been the focus of archaeological interest since before WW2. From 1965 onwards, the 19th Ephorate of Prehistoric and Classical Antiquities has been conducting systematic excavations in the area. The mosaics which came to light form part of the floor of a typical Roman triclinium, the formal dining room in Roman houses. Monstrous ichtyocentaurs and Nereids are depicted in the mosaic unearthed, along with portrayals of the God of Eurus River and Plotini.

Head of the excavations, archaeologist Matthaios Koutsoumanis, vividly describes the findings: "both [creatures] are seated on a dolphin, and one of them is holding a scarf over the head like a 'peplos'. It is certain by now that the scene with the Eurus River and Plotini is not the only one, as a second panel is coming to light. […] Next year’s excavation has a lot of surprises in store for us."