' is a rather large

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct 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, although, like the much large ...

Ilomantsi Ilomantsi ( krl, Il'manči or Ilomančči, sv, Ilomants) is municipality and a village of Finland. It is located in the North Karelia region. The municipality has a population of () and covers an area of of which is water. The population densi ...

North Karelia North Karelia ( fi, Pohjois-Karjala; sv, Norra Karelen) is a region in eastern Finland. It borders the regions of Kainuu, North Savo, South Savo and South Karelia, as well as Russia's Republic of Karelia. It is the easternmost region of Fin ...

, Finland. The lake, which sports 451 islands and many

beach A beach is a landform alongside a body of water which consists of loose particles. The particles composing a beach are typically made from rock, such as sand, gravel, shingle, pebbles, etc., or biological sources, such as mollusc sh ...

es, is located in the middle of wilderness. The river Koitajoki, which is a tributary of the river

Pielisjoki Pielisjoki (River Pielinen) is a long river in Eastern Finland. It is the sixth most fast-flowing river in Finland and the largest river draining into Lake Saimaa. The river connects the two largest lakes in North Karelia, Pielinen and Pyhäsel ...

in North Karelia, flows from the lake. Koitere Lacus, one of the apparent

methane Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane on Ea ...

lakes on Saturn's moon Titan is named after this lake. That ''lake'' is located 79.4 N and 36.14° W on Titan's globe and is presumed to be composed of liquid

and

ethane Ethane ( , ) is an organic chemical compound with chemical formula . At standard temperature and pressure, ethane is a colorless, odorless gas. Like many hydrocarbons, ethane is isolated on an industrial scale from natural gas and as a petroc ...

References

LKoitere Landforms of North Karelia Lakes of Ilomantsi {{EasternFinland-geo-stub