Fagnano Lake
Encyclopedia
Cami Lake is a lake
Lake
A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 located on the main island
Isla Grande de Tierra del Fuego
Isla Grande de Tierra del Fuego is an island near the southern tip of South America from which it is separated by the Strait of Magellan...

 of the Tierra del Fuego
Tierra del Fuego
Tierra del Fuego is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of a main island Isla Grande de Tierra del Fuego divided between Chile and Argentina with an area of , and a group of smaller islands including Cape...

 archipelago
Archipelago
An archipelago , sometimes called an island group, is a chain or cluster of islands. The word archipelago is derived from the Greek ἄρχι- – arkhi- and πέλαγος – pélagos through the Italian arcipelago...

, and shared by Argentina
Argentina
Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

 and Chile
Chile
Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

.

The 645 km² lake runs east-west for about 98 kilometres, of which 72.5 km (606 km²) belong to the Argentine Tierra del Fuego Province
Tierra del Fuego Province (Argentina)
Tierra del Fuego is an Argentine province entirely separated from mainland Argentina by the Strait of Magellan. It includes:* The eastern part of the Isla Grande of Tierra del Fuego archipelago and the Staten Island.* Argentina's claims to the Falkland Islands and to...

, and only 13.5 km (39 km²) belong to the Chilean Magallanes y la Antártica Chilena Region
Magallanes y la Antártica Chilena Region
The XII Magallanes and Antártica Chilena Region is one of Chile's 15 first order administrative divisions...

. It has a maximum depth of 200 meters.

The southern bank is steep compared to the northern, and expands in a considerably wide and flat piedmont
Piedmont
Piedmont is one of the 20 regions of Italy. It has an area of 25,402 square kilometres and a population of about 4.4 million. The capital of Piedmont is Turin. The main local language is Piedmontese. Occitan is also spoken by a minority in the Occitan Valleys situated in the Provinces of...

 from which both levels of the plateau
Plateau
In geology and earth science, a plateau , also called a high plain or tableland, is an area of highland, usually consisting of relatively flat terrain. A highly eroded plateau is called a dissected plateau...

s can be appreciated.

From its western end, the Azopardo River
Azopardo River
The Azopardo River , is a river in Isla Grande de Tierra del Fuego, Chile at the southern tip of South America. It flows in a westerly direction and drains the waters of Fagnano Lake into Almirantazgo Fjord....

 drains towards the Almirantazgo Fjord
Almirantazgo Fjord
Almirantazgo Fjord, also known as Almirantazgo Sound , is a Chilean fjord cutting deeply into the Isla Grande de Tierra del Fuego. The fjord is a southeastern projection of Canal Whiteside, which separates the just mentioned island from Dawson Island...

. On its eastern end is the town of Tolhuin
Tolhuin
Tolhuin is a town in the province of Tierra del Fuego, Argentina. It has 1,382 inhabitants as per the . It is located on the eastern shore of Lake Fagnano, in the southern part of the Isla Grande de Tierra del Fuego. It is the third biggest settlement on the Argentine side of Tierra del Fuego after...

.

The lake is located in a pull-apart basin developed along the Magallanes-Fagnano Fault
Magallanes-Fagnano Fault
The Magallanes-Fagnano fault is a continental transform fault.The fault marks a transform boundary between the Scotia Plate and the South American Plate, cutting across continental crust. It runs under the Strait of Magellan's western arm, Almirantazgo Sound and Fagnano Lake....

zone.
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