The Triplets is an ice-free three-pointed hill rising to 160 m at the southwest extremity of Alfatar Peninsula

Alfatar Peninsula

Alfatar Peninsula is a peninsula extending 4 km in northeast-southwest direction and 2.8 km wide, forming the northwest extremity of Robert Island, South Shetland Islands. Bounded by Mitchell Cove, Carlota Cove, and Clothier Harbour. Linked to Coppermine Peninsula in the west. ...

, Robert Island

Robert Island (South Shetland Islands)

Robert Island or Mitchells Island or Polotsk Island or Roberts Island is an island long and wide, situated between Nelson Island and Greenwich Island in the South Shetland Islands. Robert Island is located at . Surface area...

 in the South Shetland Islands

South Shetland Islands

The South Shetland Islands are a group of Antarctic islands, lying about north of the Antarctic Peninsula, with a total area of . By the Antarctic Treaty of 1959, the Islands' sovereignty is neither recognized nor disputed by the signatories and they are free for use by any signatory for...

, Antarctica and surmounting Coppermine Cove to the northwest, Mitchell Cove

Mitchell Cove

Mitchell Cove is the 2.8 km wide bay indenting for 3 km the southwest coast of Robert Island in the South Shetland Islands, Antarctica southeast of Alfatar Peninsula, and entered between Debelyanov Point and Negra Point...

 to the southeast, and English Strait

English Strait

English Strait is the 17 km long and 2 km wide strait lying between Greenwich Island and Robert Island in the South Shetland Islands, Antarctica. Trending southeast-northwest, and entered between Santa Cruz Point and Edwards Point in the south, and Fort William Point and Okol Rocks,...

 to the west and south. Aconcagua Point 62°23′32.8"S 59°41′08.8"W is formed by an offshoot of the hill.

The Triplets were charted and descriptively named by Discovery Investigations

Discovery Investigations

The Discovery Investigations were a series of scientific cruises and shore-based investigations into the biology of whales in the Southern Ocean. They were funded by the British Colonial Office and organised by the Discovery Committee in London, which was formed in 1918...

 personnel in 1935. Aconcagua Point was named by the 1948-49 Chilean Antarctic Expedition after the province of Aconcagua

San Felipe de Aconcagua Province

For other uses, see Aconcagua .San Felipe de Aconcagua Province is one of eight provinces of the central Chilean region of Valparaíso . Its capital is the city of San Felipe For other uses, see Aconcagua (disambiguation).San Felipe de Aconcagua Province is one of eight provinces of the central...

, Chile.

Location

The hill is located at 62°23′29"S 59°40′58"W which is 3.15 km southeast of Fort William

Fort William (Robert Island)

Fort William Point is the conspicuous flat-topped rocky headland forming the northwest extremity of Coppermine Peninsula and Robert Island in the South Shetland Islands, Antarctica...

, 750 m west-northwest of Debelyanov Point

Debelyanov Point

Debelyanov Point is a point forming the northwest side of the entrance to Mitchell Cove in Robert Island, South Shetland Islands. Situated 2.8 km northwest of Negra Point and 3.81 km southeast of Fort William Point. Bulgarian early mapping in 2008. Named after the Bulgarian poet...

, 3.55 km northwest of Negra Point

Negra Point

Negra Point is the ice-free tipped point on the southwest coast of Robert Island in the South Shetland Islands, Antarctica forming the southeast side of the entrance to Mitchell Cove...

, 6.22 km north-northeast of Spark Point

Spark Point

Spark Point, also Canto Point, is a rocky point forming the northwest side of the entrance to both Discovery Bay and Galápagos Cove, and the east side of the entrance to Jambelí Cove in the northeast of Greenwich Island in the South Shetland Islands, Antarctica. The point ends up in a conspicuous...

, Greenwich Island

Greenwich Island (South Shetland Islands)

Greenwich Island is an island long and from wide, lying between Robert Island and Livingston Island in the South Shetland Islands. Surface area...

, 3.13 km east-northeast of Barrientos Island

Barrientos Island

Barrientos Island is an ice-free island in the Aitcho group on the west side of English Strait in the South Shetland Islands, Antarctica. Extending , surface area . The area was visited by early 19th century sealers...

, Aitcho Islands and 4.1 km east-southeast of Bilyana Island

Bilyana Island

Bilyana Island is an ice-free island in the Aitcho group on the west side of English Strait in the South Shetland Islands, Antarctica. Extending , surface area...

, Aitcho Islands (British mapping in 1935, 1942, 1962 and 1968, Argentine 1948 and 1953, Chilean in 1961 and 1974, and Bulgarian in 2009).

Map

• L.L. Ivanov. Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands. Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009. ISBN 978-954-92032-6-4