Oylat Cave, located in the İnegöl district of Bursa, is a cave formed approximately 3 million years ago. The cave has a total length of 720 meters and consists of two main sections. The first section comprises narrow galleries, while the second section consists of a large collapse chamber. The cave contains stalactites, stalagmites, columns, and dripstone pools.

Inside view of Oylat Cave (AA)
Features and Information
Location
Situated in the İnegöl district of Bursa, within the Oylat Hot Springs and Oylat Waterfall region.
Located at an elevation of 750 meters above sea level.
Structural Characteristics
Age: Approximately 3 million years.
Total Length: Approximately 720 meters.
Structure: A fossil cave formed along fault lines.
Horizontal orientation with a meandering profile.
Consists of two main sections:
- First section: Narrow galleries extending from the entrance to the collapse end.
- Second section: A large collapse chamber containing large blocks and dripstone formations.
Temperature and Humidity
Stable temperature throughout the year: 18ºC.
Average humidity: 85–90%.
Zone | Temperature | Humidity |
In front of the cave | 29ºC | %47 |
At the entrance | 19ºC | %55 |
In the narrow galleries | 17ºC | %78 |
In the collapse chambers | 14ºC | %90 |
Dripstone Formations
- The cave contains stalactites, stalagmites, and columns.
- The growth rate of stalactites and stalagmites is approximately 1 centimeter per 16 years.
- Inside, there are multi-layered water pools known as dripstone pools.

Stalactite and Stalagmite Formations in Oylat Cave (AA)
Visitor Information
- The cave is visited by approximately 300,000 people annually.
- Inside, there is a route consisting of about 500 steps.
- It is noted that many visitors suffer from asthma and bronchitis.

Visitors of Oylat Cave (AA)


