It is one of the most visible places in Zonguldak. An enormous structure with different emotions when walking through the tunnel dating from the period of old mining enterprises and descending from the seaside or from Fener to the bazaar. But there is no protection at the seaside. It's dangerous to come here with children. After descending from Fener, a second tunnel descends to the seafront point on your right. From what I've heard, there are scenes filmed here in the movie Butterfly's Dream.