Saklıkent Gorge, located in the continent of Asia, is the second largest canyon in Europe, were Turkey actually in Europe. It is located in Muğla province in Turkey, 50 km from the city of Fethiye. The Canyon is 300 meters deep and 18 km long, resulting from the abrasion of the rocks by flowing waters over thousands of years. As the level of water rises during winter months, visitors can enter the canyon only in the summer. Four kilometers of the canyon are walkable after April, when most of the snow in the Taurus Mountains has melted and passed through on its way to the Mediterranean Sea. Saklıkent means "hidden city" in Turkish.
Information based on http://en.wikipedia.org/wiki/Sakl%C4%B1kent_Canyon