[1] It is accessible from İnegöl on the state road to Ankara D.200 E90 southwards, then taking İnegöl-Tavşanlı route D.595 until Gündüzlü village exit, thenafter changing to the provincial road 16-27 at the junction marked "Oylat Thermal Spring Resort" and passing through Hilmiye village.

[2][3][4] Oylat Cave was formed on a significant, east-west oriented fault line in the marble formation dating back to around 3 Ma.

It is situated at the end of the Oylat Creek Canyon in a terrain of the Pliocene period.

It is composed of large blocks, pillars, stalactites and stalagmites as well as gravel, sand and clay layers.

It is believed that the cave is capable of curing respiratory complaints, such as asthma and bronchitis.