Only about 100 metres of this cave has been entered in the work carried out on it; its full length is estimated at two kilometres.

It is rich in stalactites and stalagmites, and the dripstone formations are still forming, so a visitor who goes in sees formations of many different kinds. The cave is at Beşkayalar, on the Aytepe-Menekşe plateau in the Yuvacık township of the Başiskele district, and is reached by road.

Getting there

Access
The cave is at Beşkayalar on the Aytepe–Menekşe plateau by the town of Yuvacık in the Başiskele district, and is reached by road.Checked: September 15, 2026

When to go

Climate
Across Kocaeli as a whole, monthly mean temperatures run from 6.3 °C in January to 24 °C in August; the mean stays between 15 and 25 °C in May, June, July, August, September and October; rainfall is heaviest in December (108 mm) and lightest in August (42 mm). Long-term means for 1929-2025 from the Turkish State Meteorological Service (MGM).Checked: September 22, 2026