Castillo Nunatak is a conspicuous rocky peak rising to 437 m on the

glacial A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires ...

divide between

Huntress Glacier Huntress Glacier is a glacier long and wide flowing into the head of False Bay, Livingston Island in the South Shetland Islands, Antarctica. It is situated east of Johnsons Glacier, southeast of Contell Glacier and Balkan Snowfield, south o ...

and

Balkan Snowfield Balkan Snowfield (Plato Balkan \'pla-to bal-'kan\) is an ice-covered plateau of elevation ranging from in eastern Livingston Island in the South Shetland Islands, Antarctica, situated south of lower Perunika Glacier, northwest of Huntress Glacier ...

on Hurd Peninsula in eastern

Livingston Island Livingston Island (Russian name ''Smolensk'', ) is an Antarctic island in the Southern Ocean, part of the South Shetland Islands, South Shetlands Archipelago, a group of List of Antarctic and subantarctic islands, Antarctic islands north of the ...

in the

South Shetland Islands The South Shetland Islands are a group of List of Antarctic and subantarctic islands, Antarctic islands located in the Drake Passage with a total area of . They lie about north of the Antarctic Peninsula, and between southwest of the n ...

Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. ...

. It is linked to Charrúa Ridge to the west

Charrúa Gap Charrúa Gap (Sedlovina Charrúa \se-dlo-vi-'na cha-'ru-a\) is a flat ice-covered saddle extending in east-west direction between Castillo Nunatak and Charrúa Ridge on Hurd Peninsula, eastern Livingston Island at an elevation of . The gap se ...

and, via

Willan Nunatak Willan Nunatak is an ice-free tipped peak rising to 449 m on the glacier, glacial divide between Huntress Glacier and Balkan Snowfield on Hurd Peninsula in eastern Livingston Island in the South Shetland Islands, Antarctica. It is linked to B ...

and

Willan Saddle Willan Saddle (Sedlovina Willan \se-dlo-vi-'na 'wi-l&n\) is a flat, crescent-shaped and ice-covered saddle extending 1 km in the northeast–southwest direction between Burdick South Peak and Willan Nunatak in eastern Livingston Island ...

, to Burdick Ridge to the east-northeast. Castillo Nunatak is a prominent landmark in the Charrúa Gap area. The feature is descriptively named for its abrupt and isolated appearance ('Castle Nunatak' in Spanish).

Location

The peak is located at which is 860 m west of Willan Nunatak, 2.5 km northeast of

Napier Peak Napier Peak is the partly ice-free peak rising to 380 m on Hurd Peninsula, Livingston Island in the South Shetland Islands, Antarctica. It is linked to Charrúa Gap to the north by a 1.5 km ice-covered col, and by an ice-covered saddle t ...

, 2,9 km east of Charrúa Ridge and 2.8 km east-southeast of Krum Rock. Detailed Spanish mapping in 1991, and Bulgarian mapping in 1996, 2005 and 2009.

Maps

Isla Livingston: Península Hurd.
Mapa topográfico de escala 1:25000. Madrid: Servicio Geográfico del Ejército, 1991. (Map reproduced on p. 16 of the linked work) * L.L. Ivanov. Livingston Island: Central-Eastern Region. Scale 1:25000 topographic map. Sofia: Antarctic Place-names Commission of Bulgaria, 1996. * L.L. Ivanov et al. Antarctica: Livingston Island and Greenwich Island, South Shetland Islands. Scale 1:100000 topographic map. Sofia: Antarctic Place-names Commission of Bulgaria, 2005. * L.L. Ivanov
Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands
Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009.
Antarctic Digital Database (ADD).
Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated. * L.L. Ivanov. Antarctica: Livingston Island and Smith Island. Scale 1:100000 topographic map. Manfred Wörner Foundation, 2017.

References

SCAR Composite Gazetteer of Antarctica
Nunataks of Antarctica Nunataks of Livingston Island {{Antarctica-mountain-stub