St. Khach Monastery was a ruinous Armenian monastery in the abandoned village of Agarak, near the village of Kulus (Shahbuz District) of the Nakhchivan Autonomous Republic of Azerbaijan.
[1] It was situated on a terrace on the slope of a hill, approximately 500-600m northwest of Agarak (abandoned in 1825), some 2 km north of modern Kulus.
[2][3] It was a single nave structure with a vaulted hall, semicircular apse with vestries on either side, and entrance in the west.
Surrounding the church were auxiliary monastic buildings and an outer wall, which were in ruins by the late Soviet years.
[1] The remnants of the monastery were completely erased at some point between 1997 and November 11, 2009, as documented by Caucasus Heritage Watch.