The Battle of Achelous or Acheloos, also known as the Battle of Anchialus, took place on 20 August 917, on the Achelous river near the Bulgarian Black Sea coast, close to the fortress Tuthom between Bulgarian and Byzantine forces. The Bulgarians obtained a decisive victory which not only secured the previous successes of Simeon I, but made him de facto ruler of the whole Balkan Peninsula, excluding the well-protected Byzantine capital Constantinople and the Peloponnese.
Bulgarian troops seizing Adrianople
Zoe of Byzantium and her son, emperor Constantine VII
The oath of the Byzantine soldiers on the eve of the battle
The Bulgarian victory at Anchialus
Pomorie, historically known as Anchialos, is a town and seaside resort in southeastern Bulgaria, located on a narrow rocky peninsula in Burgas Bay on the southern Bulgarian Black Sea Coast.
Aerial view of Pomorie
Centre of Pomorie
Pomorie's ancient Thracian tomb
Building of Pomorie Municipality in 2010