Nature · Merkez, Zonguldak
Gökgöl Cave
At 3,350 metres, Zonguldak's second-longest cave, with a lit walkway.
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Gökgöl Cave is about 10-15 minutes from central Zonguldak. Of its total length of 3,350 metres, an 875-metre walkway is open to visitors, with an underground stream running through it that swells in wet periods. Known for its stalactites, stalagmites and columns, the cave opened to tourism in 2001 and has been fitted with glass bridges and viewing terraces.