It was probably constructed, originally, at the end of the 1st millennium BC, at which time it was the only fortification controlling the valleys of the Iori and Alazani rivers.
[1][2] Archeology conducted during the 1970s in the area uncovered extensive evidence of the settlement that flourished in the flat land beneath the castle during and before the medieval period.
[1] According to the chronicle it was one of several places to which Vakhtang appointed a bishop after he had built the Svetitskhoveli Cathedral at Mtskheta.
[3] According to one interpretation of the sources the Khornabuji township was destroyed by Mongul invaders under Berke Khan around 1264, and survivors relocated to Sighnaghi, after which there was no further significant settlement outside the castle walls.
[3] An alternative view is that it was during the seventeenth century the settlement fell into ruin following the invasion undertaken from Iran by Shāh Abbās.