Cennet-Cehennem Caves (Mersin)

The Caves of Heaven and Hell are located within the boundaries of Narlıkuyu Village, Hasanaliler Neighborhood, in the Silifke district of Mersin Province. They are situated 25 kilometers from the Silifke district center, 2 kilometers northwest of the Ancient Narlıkuyu Harbor, and approximately 5 kilometers from Corycus (modern-day Kızkalesi). These formations are natural geological structures created when underground waters, over thousands of years, dissolved and eroded layers of limestone, causing the ceiling to collapse. In antiquity, these depressions were regarded as sacred and gradually merged to form the present-day underground cave-and-gorge configuration.

Heaven’s Collapse (Heaven’s Sinkhole)

Known in antiquity as the Corycus Cave, Heaven’s Collapse has an elliptical opening measuring 250 by 110 meters and a depth of 70 meters. At the southern base of the sinkhole is a large cave entrance, 200 meters long and reaching a maximum depth of 135 meters. At the mouth of this cave stands a small church dated to the 5th century CE. Visitors descend into Heaven’s Collapse via a stone staircase of approximately 450 steps. The church is reached at the 300th step, after which the interior sections of the cave can be explored. At the far end of the cave, the sound of an underground river can be heard.

Heaven’s Sinkhole / Heaven’s Collapse Cave (Türkiye Culture Portal)

Church of the Virgin Mary

Located at the entrance of Heaven’s Collapse, the Church of the Virgin Mary was constructed in a rectangular plan using ashlar masonry oriented east-west. According to a four-line inscription above the entrance door, the church was built by a pious man named Paulus in dedication to the Virgin Mary. Each of the north and south walls features six arched window openings. The apse on the eastern side and its two adjacent rooms are covered by domes. The dome of the apse and its interior walls were decorated with frescoes depicting Jesus Christ and his apostles, which have deteriorated over time.

Church of the Virgin Mary (Türkiye Culture Portal)

Hell’s Pit (Hell’s Sinkhole)

Hell’s Pit, located approximately 75 meters northeast of Heaven’s Collapse, has an opening measuring 75 by 50 meters and a depth of 128 meters. This depression was formed by chemical erosion from an underground stream. Due to its concave edges, descent into the pit is not possible. A viewing terrace has been provided for visitors.

Mythological Context

In Greek mythology, after the war between the gods and the Titans, the defeated Titans were imprisoned underground. Gaia, the Earth Mother, gave birth to the hundred-headed dragon Typhon to seek revenge. Typhon fought Zeus and was defeated. According to myth, before being finally confined beneath Mount Etna in Sicily, Typhon was temporarily held captive in Hell’s Pit.

Temple of Zeus

The temple located at the southern end of Heaven’s Collapse is a Doric structure dating to the Hellenistic period and originally lacked surrounding columns. On the north wall of the temple, 130 names of religious officials who served during the Hellenistic and Roman periods are carved into reused stones. During the Christian era, the building was converted into a church; the entire south wall was dismantled, and a three-arched wall was constructed using its stones on the western entrance side. Today, this wall is in ruins.

Temple of Zeus (Türkiye Culture Portal)

The Caves of Heaven and Hell attract attention not only for their geological features but also for their archaeological and religious structures. Buildings such as the Church of the Virgin Mary and the Temple of Zeus, which have survived from antiquity to the present, reinforce the historical and cultural significance of these natural formations. Mythological narratives indicate that the caves were regarded as sacred and used for ritual purposes in antiquity. In this regard, the Caves of Heaven and Hell constitute an important cultural heritage, embodying both natural and historical unity.