The cave is technically a collapsed cavern, or 'obruk,' meaning its roof partially caved in, allowing daylight to enter the main chamber.
The sulfurous water inside the cave is widely believed by locals to have therapeutic properties for various skin conditions.
The water inside the cave system maintains a constant temperature of approximately 22-25 degrees Celsius throughout the year.
Because of the constant mineral deposition, the cave's travertine structures are geologically 'active' and continue to evolve.
The cave's ecosystem supports specialized moss and small plant life near the natural skylights created by the collapsed roof.
Kaklık Cave is a unique subterranean karst system often described as an underground version of Pamukkale due to its white travertine formations. The cave is formed by a thermal spring rich in sulfur and mineral salts that continuously deposits calcium carbonate. Visitors walk along a circular elevated boardwalk through a cavern measuring approximately 125 meters in length. The site features active stalactites, stalagmites, and a central flow of thermal water that remains constant in volume and temperature. Outside the cave entrance, an outdoor swimming pool is fed by the same mineral-rich thermal spring water. The site is located in the Honaz district of Denizli, within a region characterized by intense tectonic and geothermal activity. The cave environment has high humidity levels and constant ventilation, keeping temperatures stable year-round.
From the elevated wooden walkway looking down into the main cavern where sunlight hits the cascading white travertines.
Bring a towel and swimwear if you intend to use the outdoor pool, as facilities may be basic.
The boardwalk inside the cave can be slippery due to the constant water flow; wear shoes with good grip.
Expect a strong sulfur (rotten egg) smell inside the cave, which is characteristic of the mineral-rich thermal water.
Attempting to drink the thermal water inside the cave, as it is high in sulfur and other minerals not intended for consumption.
Do not touch the delicate travertine formations as oils from skin can permanently damage the mineral deposits.
