14 km towards east from Stepanakert is situated Askeran’s remarkable fort. The fort with high towers and thick walls is closed by Karkar River’s valley from two sides. It is fastened with double-ramparts, with which it makes impregnable the canyon between the mountains. The towers communicated by trench-like passages in the cogged top parts of the wall. In the walls from inside there are numerous holes and different width-passages. From some passages through walls like air-passages stretch top special pipe-like openings. Since ancient times the fort together with the medieval Armenian village next to it has been called Mayraberd fortress. The fortress walls are 2m thick and 9m tall. The walls of this vanguard fort of Karkar valley stretch over 1.5km and many a times played the role of protecting shield during Shushi’s defense. In historical literature there is quite enough information about the heroic events that took place by the strong walls of this fort.