The canyon was formed in prehistoric times by the. It lies between the villages of Ihlara in the southeast and Selime in the northwest. At the north end of the village of Ihlara, there is a stairway with almost 400 steps, which descends over 100 m down into the canyon. From the 7th century AD, the valley was settled by Byzantine monks who dug their houses and churches out of the tuff stone, which had been deposited by the eruptions of Mount Hasan. The earlier Greek name, Peristrema of the village of Belisarma which is located about halfway along the valley from Ihlara to Selime, gave its name to the valley as well.
Churches
The churches in the valley fall into two groups. The first consists of the churches near the village of Ihlara, which are decorated with paintings of a local Cappadocian type that show influence from Persia and Syria to the east. They mostly pre-date the Iconoclasm, but were often repainted in newer styles over time. The second group is located near the village of Belisarma and consists of churches in the Byzantine style of the tenth and eleventh centuries, known as Macedonian art. The first group includes:
Ağaçaltı Kilisesi : a cross-in-square church cut out of the cliff, perhaps dating to the 7th century AD. The depiction of the Ascension in its cupola pre-dates the Iconoclasm.
Yılanlı Kilise : another cross-in-square church with an unusually long apse. In the narthex there are scenes of Hell dating to the 9th century AD, and below them are four naked sinners in the grip of snake-like monsters - from which the church takes its modern name.
Sümbüllü Kilise : possibly from the 10th century AD. The church has a T-shaped ground plan and belongs to the transition to the Macedonian style. The wall paintings include depictions of Constantine VII with his wife Helena. On the other hand, the external facade shows eastern influences.
The second group includes:
Direkli Kilise. The cruciform nave church was created in the 10th century AD. The cupola is supported by four tall columns, which are decorated with portraits of saints. One of the few inscriptions in the valley reports the dedication of the church by the Byzantine emperorBasil II.
Karagedik Kilisesi : a cross-in-square church with four pillars, which was built from bricks and trachyte blocks in the 11th century and has been almost entirely destroyed aside from some faded remains of paintings.
Kırkdamaltı Kilisesi. An inscription allows the church to be dated between 1283 and 1295, which makes it the last known example of Christian architecture in the Ihlara valley until the revival of church building by the Cappadocian Greeks in the 19th century. The church's paintings include depictions of St George, a painting of the Byzantine consul Basileos Giagupes, who was also an Emir and is shown in Seljuk clothing with his wife Thamar, a Georgian princess. The aforementioned inscription mentions both the Seljuk Sultan Mesud II and the Byzantine emperor Andronikos II Palaiologos, a sign that at this date some kind of peaceful co-existence between Christians and Muslims was possible in Cappadocia.
In the Niğde Archaeological Museum, there is a display of the mummies of a woman and four children who were entombed in the Ihlara Valley in the 10th century AD. The Aksaray Museum also has mummies from the Ihlara valley.
