Location: Bursa
The cave is located inside the borders of Ayva village of Bursa.
Properties: Except entrance section, the cave is horizontally developed. There are two entrances to the cave. Entering the cave from one point (Doganalani) and leaving the cave from another is possible. Just at the entrance of the cave, there is a vertical downward descend of 17 meters are shallow enough to pass.

Oylat Cave
Location: Bursa, Inegöl District, Hilmiye Village
The cave is located at one kilometer south of Hamiliye village which is 17 km. away from the road branching for Oylat Thermal Spring Resort from Bursa-Ankara highway.

Properties: The total length of the cave is 665 meters and is composed of two main sections. The first section is formed from narrow galleries and is the section starting from the entrance to the end of the debris. There are cauldrons and damlatas pools inside the cave. The second section is the big debris saloon. This section of the cave is composed of large blocks and giant damlatas shapes. (stalactite, stalagmite and pillars)

The front side of the cave has the temperature of 29ºC , humidity of 47 percent, the entrance has the temperature of 19ºC, humidity of 55 percent, at the narrow gallery the temperature of 17ºC, humidity of 78 percent and at the debris saloons the temperature of 14ºC and humidity of 90 percent.

Thermal Resorts

Oylat Thermal Resort

Location: 27km south of Inegol, southwest of Bursa.
Transport: The resort is off the highway between Inegol and Tavsanli.

The nearest airport at Yenisehir, near Bursa.
Water temperature: Oylat Hamami Spring - 40°C. Sizi Suyu Spring –35.5°C. Goz Suyu Spring - 10°C.
pH value: Oylat Hamam Spring –7.26. Sizi Suyu Spring –7.18. Goz Suyu Spring –7.04.
Physical and chemical properties: The various springs contain some, or all of the following: Sulphur, bicarbonate, calcium, ionic hydrogen and iron.
Recommended Applications: Drinking and bathing
Helps to heal: Drinking - diuretic and good for obesity. Bathing - relaxing sedative.
Accommodation: Buyuk Hotel - 220 beds. Motel - 210 beds.

Çekirge Thermal Resort
Location: In the Cekirge area of Bursa, on the eastern side of the city.
Water temperature: Vakifbahce Spring - 47°C. Karamustafa Spring - 58°C. Kaynarca and Yenikaplica Springs - 77°C. Kukurtlu Hamam Spring - 78°C
pH value: Vakifbahce Spring – 6.98. Karamustafa Spring – 6.6. Kaynarca and Yenikaplica Springs – 6.78. Kukurtlu Hamam Spring – 6.44

Physical and chemical properties: The group of springs contain some, or all of the following: hyperthermal, hypertonic, oligometallic and radioactive, bicarbonate, sulphur, calcium, magnesium, sodium and carbon dioxide.
Recommended: Applications Drinking and bathing
Helps to heal: Rheumatic ailments, painful disorders of muscular system, chronic gynaecological infections and cramps, blood clots and bronchitis. Combination of bathing and drinking for liver and gall bladder condition, mild gout and diabetes, and obesity.
Accommodation: Anatolia Hotel - 192 beds. Buyuk Yildiz Hotel - 68 Beds. Hotel Kervansaray - 500 beds.

Armutlu Thermal Resort
Location: 2km north of Armutlu, which is around 20km west of Yalova.
Transportation: Accessible from Bursa, Yalova and Istanbul by road, sea and air.
Water temperature: 57°C
pH value: 6.2 - 6.5
Physical and chemical properties: Sulphur, bicarbonate, chlorine, calcium, sodium and carbon dioxide.
Recommended: Applications Drinking and bathing
Helps to heal: Rheumatism, cardiovascular conditions, gynaecological disorders, mental and muscular fatigue, nervous and eating disorders.
Accommodation: 2-star hotel.