Carroll Inlet is an inlet, 40 miles (64.4 km) long and 6 miles (10 km) wide, trending southeast along the Antarctic coast between the Rydberg Peninsula

Rydberg Peninsula

Rydberg Peninsula is a broad ice-covered peninsula, 30 miles long, between Fladerer Bay and Carroll Inlet, Palmer Land. Rydberg Peninsula is located at . Rydberg Peninsula was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1961-1966...

 and Smyley Island

Smyley Island

Smyley Island is an Antarctic island lying off the Antarctic Peninsula at coordinates .-See also:* Composite Antarctic Gazetteer* List of Antarctic and sub-Antarctic islands* List of Antarctic islands south of 60° S* SCAR...

. The head of the inlet is divided into two arms by the presence of Case Island

Case Island

Case Island is a roughly circular ice-covered island, in diameter, lying off the Antarctic coast. The island lies in Carroll Inlet between the mainland and Smyley Island. It was mapped by the United States Geological Survey from surveys and from U.S. Navy aerial photographs, 1961–66. The name was...

 and is bounded to the east by Stange Ice Shelf

Stange Ice Shelf

Stange Ice Shelf , is an Antarctic ice shelf in Stange Sound, English Coast, bounded to the east by Spaatz Island, to the northwest by Smyley Island, and to the west by fast ice in Carroll Inlet. Named in association with Stange Sound. In contrast to the some other ice shelves on the Antarctic...

. It was discovered on an airplane flight, December 22, 1940, by members of the United States Antarctic Service (USAS) (1939–41), and named after Arthur J. Carroll, chief aerial photographer on USAS flights from the East Base.