Burgas–Alexandroupoli pipeline
The Burgas–Alexandroupoli pipeline was a proposed oil pipeline project for transportation of Russian and Caspian oil from the Bulgarian Black Sea port of Burgas to the Greek Aegean port of Alexandroupoli. It was seen as an alternative route for Russian oil, bypassing the Bosporus and the Dardanelles.
Source: Wikipedia — Burgas–Alexandroupoli pipeline (CC BY-SA 4.0)