Guest Peninsula is a snow-covered peninsula about 45 mi (72 km) long between Sulzberger Ice Shelf and Block Bay

Block Bay

Block Bay is a long ice-filled bay lying east of Guest Peninsula along the coast of Marie Byrd Land. It was discovered in 1929 by the Byrd Antarctic Expedition, and named by Richard E. Byrd for Paul Block, newspaper publisher and patron of the expedition....

 in the northwest part of Marie Byrd Land

Marie Byrd Land

Marie Byrd Land is the portion of West Antarctica lying east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean, extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast. It stretches between 158°W and 103°24'W...

. Mitchell Peak

Mitchell Peak

Mitchell Peak is a solitary peak 13 nautical miles west of Birchall Peaks on the south side of Guest Peninsula in Marie Byrd Land. It was sighted by R. Admiral Byrd, December 5, 1929, while on an airplane flight over this coast. Named by Byrd for Hugh C. Mitchell, mathematician of the U.S...

, located on the peninsula, was sighted by the first Byrd Antarctic Expedition in 1929. This feature was defined and mapped as Guest Island by the United States Antarctic Service Expedition

United States Antarctic Service Expedition

The United States Antarctic Service Expedition , often referred to as Byrd’s third Antarctic Expedition, was an expedition jointly sponsored by the United States Navy, State Department, Department of the Interior and The Treasury...

 in 1940. It was determined to be a peninsula by U.S. Geological Survey cartographers from air photos taken by the U.S. Navy, 1962-65. Named for Amy Guest, contributor to the second Byrd Antarctic Expedition, 1933-35.

As originally charted, the westernmost portion of what was then thought to be Guest Island was within the Ross Dependency

Ross Dependency

The Ross Dependency is a region of Antarctica defined by a sector originating at the South Pole, passing along longitudes 160° east to 150° west, and terminating at latitude 60° south...

 claimed by New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

, but none of the peninsula is actually within the claimed sector.

See also

• Composite Antarctic Gazetteer
• List of Antarctic and sub-Antarctic islands
• List of Antarctic islands south of 60° S
• SCAR
  Scientific Committee on Antarctic Research
  The Scientific Committee on Antarctic Research is an interdisciplinary body of the International Council for Science . It was established in February 1958 to continue the international coordination of Antarctic scientific activities that had begun during the International Geophysical Year of 1957-58...
  
  
• Territorial claims in Antarctica