Magdalena Channel is a 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...

an channel

Channel (geography)

In physical geography, a channel is the physical confine of a river, slough or ocean strait consisting of a bed and banks.A channel is also the natural or human-made deeper course through a reef, sand bar, bay, or any shallow body of water...

 joining the Strait of Magellan

Strait of Magellan

The Strait of Magellan comprises a navigable sea route immediately south of mainland South America and north of Tierra del Fuego...

 with Cockburn Channel and is part of a major navigation route which ultimately connects with the Beagle Channel

Beagle Channel

thumb|right|300px|Aereal view of Beagle Channel. The Chilean [[Navarino Island]] is seen in the top-right while the Argentine part of [[Isla Grande de Tierra del Fuego]] is seen at the bottom-left....

. It separates Capitán Aracena Island from the westernmost portion of Isla Grande de Tierra del Fuego

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...

, and crosses Alberto de Agostini National Park

Alberto de Agostini National Park

Alberto de Agostini National Park is a park located in the Chilean part of Tierra del Fuego. It covers and includes the Cordillera Darwin mountain range. The park is named after Alberto Maria De Agostini, who was an Italian missionary and explorer. Several tidewater glaciers and steep fjords form...

. It is flanked by mountains, the chief of which is Monte Sarmiento

Monte Sarmiento

Monte Sarmiento is a pyramidal peak with a glaciated saddle-shaped summit located within Alberto de Agostini National Park, in the Chilean portion of Tierra del Fuego. It rises abruptly from the east shore of the Magdalena Channel and marks the western border of the Cordillera Darwin...

. Together with the Abra Channel and the Bárbara Channel join the westside of the Strait of Magellan directly with the Pacific Ocean.

It is located at 54°15′S 70°55′W.