The Church of the Dormition was the central spiritual and monumental focus of the site. Carved similarly from the rock, its walls reinforced in stone, it measures by , rising to a height of . The spacious hall with broad apse and conch is covered by the
barrel vault. Additional rooms are adjacent to the west and north. The narthex is in the southern part. The church is illuminated by three windows. The western adjacent room leads to another separate hall, which has a tunnel, ending with the cold water pool. Both church and
narthex are painted; these paintings are of "crucial significance in the development of the Medieval Georgian mural painting". Its patron, Rati
Surameli, is commemorated in a
donor portrait on the north wall; the accompanying
inscription reads "Mother of God, accept ... the offering of your servant Rati,
eristavi of
Kartli, who has zealously decorated this holy church to your glory". On the same north wall are portraits of the royal founders,
Giorgi III and
Tamar, holding the church model. Both are dressed in Byzantine ceremonial clothes, in crowns, with halos. Tamar lacks the ribbon that is the attribute of a married woman and her inscription includes the formula "God grant her a long life", while that of Giorgi does not; this helps date the paintings to between Giorgi's death in 1184 and Tamar's marriage in 1186. The depiction of Tamar is the earliest among the four known. Episodes from the life of Christ occupy the vaults and upper walls in a sequence, starting with the
Annunciation, followed by the
Nativity,
Presentation in the Temple,
Baptism,
Transfiguration,
Raising of Lazarus,
Triumphal Entry into Jerusalem,
Last Supper,
Washing of the Feet,
Crucifixion,
Harrowing of Hell,
Ascension,
Descent of the Holy Spirit, and
Dormition (the church is sometimes known as the Church of the
Assumption, which corresponds with the
Orthodox Feast of the Dormition). At a lower level, more accessible as
intercessors, are paintings of saints and
stylites. On the rear wall of the
sanctuary, behind the altar, are
Twelve Church Fathers. In the
narthex are scenes of the
Last Judgment,
Bosom of Abraham, Angels bearing a Medallion with the Cross, and three scenes from the life of
Saint Stephen; other paintings were lost in the 1283 earthquake. The paintings are not
frescoes, but executed in
secco, and "testify to contacts with the Christian Orient and the
Byzantine world, but applied using local artistic traditions". The walls were painted by an artist Georgi, whose name is written in the altar part. == Management ==