Which strait separates Chile’s mainland from Tierra del Fuego?

The Strait of Magellan separates mainland Chile from Tierra del Fuego.

It is a navigable sea route through the southern tip of South America, linking the Atlantic and Pacific oceans. The passage is about 570 kilometres long and crosses a region of rugged coasts, islands, fjords and unpredictable weather. Most of the strait belongs to Chile, including its western and central sections.

The first European expedition to navigate it was led by Ferdinand Magellan in 1520. Magellan called it the Strait of All Saints, but later maps adopted his name. Before the Panama Canal opened in 1914, the strait was an important alternative to the hazardous route around Cape Horn. It remains geographically significant, although modern commercial traffic usually chooses the canal or other routes. The Beagle Channel lies farther south and is a separate waterway.