Lake Nemrut the world. Nemrut Caldera is world's second largest one. The western half of the crater is covered by the lake. AT the summit, there are five lakes, two of them existing permanently and the others seasonal. The biggest of the lakes is Lake Nemrut in the form of crescent. It contains freshwater of colorless, odorless and drink water quality. Lake Nemrut is situated at an elevation of about above main sea level. It has an area of , and its average depth is about with a maximum depth of . Nemrut Caldera is on the youngest volcanic cone in Turkey,
Mount Bahaya define the northern Horn of Africa in most of Somalia, and which extend further east, their peaks forming the Socotra Archipelago. Bahaya, along with the surrounding range, is mostly made up of the deeply-eroded remnants of an ancient volcanic chain. Mount Bahaya Mount Bahaya (Somali language: "Buurta Baxaya", sometimes spelled Mount Bahaja), also known as Mount Karkoor, is the fourth-tallest mountain in Somalia, after the triple-peaked mountains Mount Shimbiris, Mount Surud Cad, and Mount Warraq. It is the only Ultra-prominent peak in the country with a summit of about . It is located in the northern Bari region, east of