A lake is an area filled with water, localized in a basin, surrounded by land, apart from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, and therefore are distinct from lagoons, and are also larger and deeper than ponds, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which are usually flowing. Most lakes are fed and drained by rivers and streams. Bolu is a city in Turkey, and administrative center of the Bolu Province. Lake Abant is a freshwater lake in Turkey’s Bolu Province in northwest Anatolia, formed as a result of a great landslide. Some video recorded with slider. 4k resolution shot by sony alpha a7r 2 with 100 iso.