In the depths of the Golalik hills, 10 km northwest of Safranbolu, lies one of the most picturesque phenomena of nature, the picturesque Pollack Menzels Cave, which reaches a depth of 6 km, and in its depths there are lakes, waterfalls, and rivers. But it should be noted that it is forbidden for visitors to exceed a distance of 500 meters inside the cave, unless they hire a professional guide, and provide themselves with special equipment, to enjoy this adventure to the fullest, and everyone is advised to wear comfortable sports shoes, because the metal path inside can be slippery and wet .