Heaven and Hell

A landscape shaped by collapse

Near Narlıkuyu on Turkey’s Mediterranean coast, two dramatic sinkholes open in the limestone landscape above the sea. Their Turkish names, Cennet and Cehennem, mean Heaven and Hell. The Ministry of Culture explains that underground water dissolved limestone over time; after the water drained away, the weakened roof collapsed. The result is a pair of steep natural depressions whose scale and contrasting access have encouraged both practical curiosity and mythic storytelling.

The official museum profile places the site about 25 kilometres from central Silifke, two kilometres northwest of the ancient harbor of Narlıkuyu and five kilometres west of Korykos, now known as Kızkalesi. This makes the sinkholes a possible stop on a wider route through Mersin’s coastal heritage, but travelers should check driving directions and local transport rather than assume a convenient public connection.

Cennet is the larger accessible experience. The ministry describes an opening about 250 by 110 metres and a depth of roughly 70 metres. A staircase of around 450 steps descends toward the bottom and the entrance to a large cave. The depth and stair count are not merely trivia: the climb back up can be strenuous, and a visit should be planned around mobility, heat and enough time to return safely.

A cave church and a temple at the edge

At the cave entrance in Cennet stands the small structure known as the Church of the Virgin Mary. The Ministry of Culture dates it to the fifth century CE and describes a rectangular, east–west building of cut stone. Its inscription attributes its construction to a devout man named Paulus in honor of Mary. The entrance, apses and side rooms help visitors see how a sacred building was fitted into the cave landscape rather than placed on a conventional town square.

The same official account notes traces of wall paintings depicting Jesus and the apostles. The church is not a modern reconstruction: it is an archaeological and religious feature within the sinkhole, and its fragile fabric should be viewed without touching or crossing barriers. The surrounding cave extends far beyond the small church, which gives a sense of how natural geology and later human use overlap at the site.

A temple dedicated to Zeus stands near the southern edge of Cennet. The Ministry says its earliest phase belongs to the Hellenistic period and that the sanctuary was later converted into a church during the Christian era. It also reports the names of about 130 priests from Hellenistic and Roman periods carved on stones that are no longer in their original position. These layers make the sinkhole more than a geological spectacle: it became a setting for changing religious practice.

Why one is Heaven and the other Hell

The two formations differ in size and in how visitors can experience them. Cehennem lies about 75 metres north of Cennet. Its opening measures roughly 75 by 50 metres, and the ministry gives its depth as about 128 metres. The inward-curving rim makes descent impossible by ordinary visitor access. The contrast is immediate: one sinkhole offers a long stairway toward a cave and historic structures; the other is viewed from above.

The name Cehennem is linked to a Greek myth recorded in the official site description. Zeus defeats Typhon, a hundred-headed, fire-breathing monster, and holds him in the pit for a time before confining him beneath Mount Etna. This is a mythic explanation, not the geological origin of the chasm. Keeping the two accounts separate lets the visitor enjoy the legend without mistaking it for a scientific claim.

Look from designated safe viewpoints and never attempt to climb the rim or descend outside approved access. The drop is substantial and the ground can be unstable. Cennet’s stairs also require care: wear shoes with grip, take breaks on the ascent and do not hurry to the bottom if the heat or your health makes the return unsafe.

Tickets, hours and a practical coastal visit

The Turkish Ministry’s admission list identifies the site as eligible for MüzeKart and currently lists a foreign-adult rate of €12. Fees and card rules can change, and the e-ticket page instructs visitors to buy a ticket or card at the ticket office. Check the Ministry’s current price page before traveling rather than relying on an old blog or copied itinerary.

Opening hours vary by season. A ministry notice says extended tourism-season hours for the relevant sites ran from 1 May through 1 October 2026; that period has passed for a late-October visit. The official ticket profile does not settle the daily schedule for every date, so confirm the current hours directly with the Silifke Museum Directorate. Do not assume that a past summer timetable remains in force.

Allow time for both sinkholes, the church and the Zeus temple, and combine the stop with nearby Narlıkuyu or Kızkalesi only after checking travel time. Bring water and sun protection, and consider whether the 450-step descent is suitable for everyone in your group. The site is most rewarding when geology, religious history and myth are read as different layers of the same landscape—each fascinating, none a substitute for the others.