Lakes are number of water (fresh or salty) that accumulates in a large enough area, which can occur due to melting of glaciers, rivers, or because of springs. Usually lakes can be used as recreational facilities, and sports. The lake is a large basin on the surface of the earth that is flooded by plain or salty water, which is surrounded by land.
Most lakes are fresh water and many are in the northern hemisphere at higher altitudes. A periglasial lake is a lake which in one of them forms an ice sheet, "ice cap" or glacier, this ice covers the flow of water out of the lake.
The term lake is also used to describe phenomena such as Lake Eyre, where the lake is dry in many times and is only filled during the rainy season. Many lakes are artificial and intentionally built for hydro-electric power supply, recreation (swimming, windsurfing, etc.), water supplies, etc.
Finland is known as the "Land of a Thousand Lakes" and Minnesota is known as "Ten Thousand Lakes Land". The Great Lakes in North America also have origin from the ice age. About 60% of the world's lakes are located in Canada, this is because of the chaotic drainage system that dominates this country.
On the moon there is a dark area with a base, similar to mare moon but smaller, called lacus (from Latin which means "lake"). They are estimated by astronomers as lakes.
Samilpo: A natural lake that stretches from north to south in the Gaocheng-gun of Gangwon-do, in the eastern part of the Democratic People's Republic of Korea. It is one of the eight scenic spots in Kanto, and it is now being built as a tourist attraction for the Korean people.