Saklikent (Hidden City) Gorge is the second-largest (20 km-long) gorge in Europe, the longest and deepest gorge in Turkey. Saklikent Gorge is so steep and narrow that the sun cannot not penetrate the water which makes it very cold even in summer. Saklikent is 48 kilometers away from Fethiye. You can also reach Saklikent from Kas which is 55 kilometers away.