Nemrut (volcano) inside the caldera, becoming the world's second largest caldera lake. Subsequent eruptions separated a small lake Ilı from Lake Nemrut. Nemrut volcano has an elliptical shape, its size at the base is 27×18 km, and its center contains 377.5 km of volcanic materials. The caldera of Nemrut is the largest in Turkey, the fourth largest in Europe and sixteenth largest in the world. Locals link the name of the volcano with the legendary ruler Nimrod, who is credited with the construction of the Tower of Babel. Turkish chronicles of the 16th century reproduce a local legend as follows: Eruptions of
Mount Batu Mount Batu Mount Batu is one of the highest of the Bale Mountains of Ethiopia, as well as of the Oromia Region. Part of the Bale National Park, and located at , it reaches an elevation of 4,307 meters. It consists of two peaks, Tinnish Batu ("Little Batu"), which is actually higher than Tilliq Batu ("Big Batu") to the south. The reason for these deceptive names is explained by Paul Henze, who reports that upon viewing them, "it appeared that the peak behind Tinnish Batu was definitely higher." The first European to climb Mount Batu was the Finnish professor Helmer