Rydberg Peninsula is a broad ice

Ice

Ice is water frozen into the solid state. Usually ice is the phase known as ice Ih, which is the most abundant of the varying solid phases on the Earth's surface. It can appear transparent or opaque bluish-white color, depending on the presence of impurities or air inclusions...

-covered peninsula

Peninsula

A peninsula is a piece of land that is bordered by water on three sides but connected to mainland. In many Germanic and Celtic languages and also in Baltic, Slavic and Hungarian, peninsulas are called "half-islands"....

, 30 miles long, between Fladerer Bay

Fladerer Bay

Fladerer Bay is a bay about 15 nautical miles long and 6 nautical miles wide between Wirth Peninsula and Rydberg Peninsula in Ellsworth Land, Antarctica. Mapped by United States Geological Survey from surveys and U.S. Navy air photos, 1961-66...

 and Carroll Inlet

Carroll Inlet

Carroll Inlet is an inlet, long and wide, trending southeast along the Antarctic coast between the Rydberg Peninsula and Smyley Island. The head of the inlet is divided into two arms by the presence of Case Island and is bounded to the east by Stange Ice Shelf...

, Palmer Land

Palmer Land

Palmer Land is that portion of the Antarctic Peninsula which lies south of a line joining Cape Jeremy and Cape Agassiz. This application of Palmer Land is consistent with the 1964 agreement between US-ACAN and UK-APC, in which the name Antarctic Peninsula was approved for the major peninsula of...

. Rydberg Peninsula is located at 73°10′S 79°45′W. Rydberg Peninsula was mapped by the United States Geological Survey

United States Geological Survey

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...

 (USGS) from surveys and U.S. Navy air photos, 1961-1966. Rydberg Peninsula was named by the United States Advisory Committee on Antarctic Names (US-ACAN) for Captain

Captain (nautical)

A sea captain is a licensed mariner in ultimate command of the vessel. The captain is responsible for its safe and efficient operation, including cargo operations, navigation, crew management and ensuring that the vessel complies with local and international laws, as well as company and flag...

 Sven Rydberg, commander

Commander

Commander is a naval rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the armed forces, particularly in police and law enforcement.-Commander as a naval...

 of USNS Eltanin on Antarctic cruises, February 1962 to June 1963.