Via Pontica
Via Pontica was an ancient Roman road in Thrace along the Black Sea, starting from Byzantium and passing through Deultum, Aquae Calidae, Apollonia, Mesembria, Odessos, Byzone, and Kaliakra ; and then through Kallatis, Tomis, and Istros.
Bird migration route
Today the name "Via Pontica" is given to Europe's second largest bird migration route, through the western part of the Black Sea Biogeographic Region.The migrating birds use the coastal lakes, marshes and lagoons behind the shoreline, and some spend the winter in these wetlands.
The Danube Delta is the best known of the wetlands. For the first time in ornithology the term "Via Pontica" was used by the Bulgarian ornithologist Nikolay Boev to denote the Western Black Sea migratory way of birds.