), also called “the wall of Anastasius,” was a fortification constructed in A.D. 507, by the emperor Anastasius I. of Constantinople, as a means of defence against the Bulgarians: it consisted of a strong wall running across the isthmus of Constantinople, from the coast of the Propontis to that of the Euxine, [p. 2.242]
Some parts of this wall, which at a later period proved useful against the Turks, are still existing. (Procop. de Aed.
4.9; comp. Dict. of Biogr.
Vol. I. p. 159.)