is that portion of the Antarctic
continent bounded on the west by Marie Byrd Land
, on the north by Bellingshausen Sea
, on the northeast by the base of Antarctic Peninsula
, and on the east by the western margin of Ronne Ice Shelf
. It extends between 103°24'W and 79°45'W. The area west of 90°W is unclaimed, the area between 84°W and 90°W is claimed by Chile
only, and the remainder by Chile and the United Kingdom
as a part of the British Antarctic Territory
. Eights Coast
stretches between 103°24'W and 89°35'W, and Bryan Coast
between 89°35'W and 79°45'W.
It is largely a high ice plateau, but includes the majestic Ellsworth Mountains and a number of scattered mountain groups: Hudson, Jones, Behrendt, Merrick, Sweeney and Scaife Mountains.
This land lies near the center of the area traversed by American explorer Lincoln Ellsworth on an airplane flight during November-December 1935. It was named for him by US-ACAN (1962) to commemorate that historic transcontinental flight from Dundee Island to the Ross Ice Shelf.