The Katskhi pillar is a natural limestone monolith. It is approximately 40 metres high, and overlooks the small river valley of Katskhura.
The rock, with visible church ruins on a top surface measuring c. 150 m2, has been venerated by locals as the Pillar of Life and a symbol of the True Cross, and has become surrounded by legends. It remained unclimbed by researchers and unsurveyed until 1944 and was more systematically studied from 1999 to 2009. These studies determined the ruins were of an early medieval hermitage dating from the 9th or 10th century. A Georgian inscription paleographically dated to the 13th century suggests that the hermitage was still extant at that time. Religious activity associated with the pillar was revived in the 1990s and the monastery building had been restored.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.