Isla Bartolomé is an uninhabited subantarctic

Subantarctic

The Subantarctic is a region in the southern hemisphere, located immediately north of the Antarctic region. This translates roughly to a latitude of between 46° – 60° south of the Equator. The subantarctic region includes many islands in the southern parts of the Indian Ocean, Atlantic Ocean and...

 island. With an area of 93 ha and a maximum height of 190 m it is the largest of the 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 Diego Ramírez Archipelago

Diego Ramírez Islands

The Diego Ramírez Islands are a small group of lesser islands located in the southernmost extreme of Chile about south-west of Cape Horn and south-south-east of Ildefonso Islands, stretching north-south . Their land area is little more than...

, being more than twice the size of the second largest - Isla Gonzalo

Isla Gonzalo

Isla Gonzalo is a subantarctic island, uninhabited except for a weather and research station operated by the Chilean Navy. With an area of 38 ha it is the second largest of the Chilean Diego Ramírez Archipelago, lying in the Drake Passage between the continents of South America and...

, lying in the Drake Passage

Drake Passage

The Drake Passage or Mar de Hoces—Sea of Hoces—is the body of water between the southern tip of South America at Cape Horn, Chile and the South Shetland Islands of Antarctica...

 between the continents of South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

 and Antarctica. It is an important breeding site for Black-browed

Black-browed Albatross

The Black-browed Albatross or Black-browed Mollymawk, Thalassarche melanophrys, is a large seabird of the albatross family Diomedeidae, and it is the most widespread and common albatross.-Taxonomy:...

 (over 35,000 pairs) and Grey-headed

Grey-headed Albatross

The Grey-headed Albatross, Thalassarche chrysostoma, also known as the Grey-headed Mollymawk, is a large seabird from the albatross family. It has a circumpolar distribution, nesting on isolated islands in the Southern Ocean and feeding at high latitudes, further south than any of the other...

 (over 9000 pairs) Albatross

Albatross

Albatrosses, of the biological family Diomedeidae, are large seabirds allied to the procellariids, storm-petrels and diving-petrels in the order Procellariiformes . They range widely in the Southern Ocean and the North Pacific...

es, as well as for Southern Giant Petrel

Southern Giant Petrel

The Southern Giant Petrel , also known as the Antarctic Giant Petrel, Giant Fulmar, Stinker, and Stinkpot, is a large seabird of the southern oceans. Its distribution overlaps broadly with the similar Northern Giant Petrel, though it overall is centered slightly further south...

s.