Zonguldak province is located at the 10th kilometer of the old Zonguldak-Çaycuma highway, on the slopes of the Sofular Valley. It is known that the cave completed its formation in Prehistoric Ages. The cave is 1.5 kilometers long and you can go down into it from the left side of a very steep well. There are stalactites and stalagmites in the cave. There are small chambers around a large room in the form of a hall. At the same time, there are small lakes in the cave.