East Base

East Base refers to one of two main Antarctic research stations established by the United States Antarctic Service Expedition (USAS) in 1939-1941. It was located on Stonington Island in Marguerite Bay, along the eastern coast of the Antarctic Peninsula. East Base served as the expedition's primary base of operations for exploring and claiming territory for the United States, particularly in the eastern sector of the Antarctic continent.

The expedition, led by Rear Admiral Richard E. Byrd, had dual objectives: scientific research and territorial claims. East Base focused on exploration, mapping, and geological surveys of the region. It was from East Base that various sledging parties undertook journeys to explore previously uncharted areas and claim land for the United States.

The term "East Base" is often contrasted with "West Base," which was the other USAS station located further west at Little America III on the Ross Ice Shelf. While both bases contributed significantly to Antarctic exploration and science, they operated independently and focused on different geographical regions.

The physical structures of East Base were abandoned after the expedition concluded in 1941. The site has since been designated as a Historic Site or Monument under the Antarctic Treaty System due to its historical significance. The remains of the buildings and artifacts serve as a tangible reminder of the early American presence and exploration efforts in Antarctica. The site is occasionally visited by researchers and tourists, though its remote location and harsh environment make access challenging. The name "East Base" is still used in historical accounts and discussions of early Antarctic exploration.