There is about 3 kilometers of Kayalıdere Valley in Ereğli district of Zonguldak. There are 7 waterfalls of various sizes in the valley. The smallest of the waterfalls flows at a height of 3 meters and the largest at a height of about 20 meters. In the valley where Kayalıdere Waterfalls are located, which nature lovers prefer especially for difficult hiking, some points can be climbed through the trees. Some rocks have interesting topographic formations, different landscapes created by cracks and bumps.