Part Antarctic Specially Protected Area No. 157 Backdoor Bay, Cape Royds, Ross Island Lat. 77°33−S; Long. 166°10−E

Cape Royds is an ice-free area at the western extremity of Ross Island, approximately 40 kilometres to the south of Cape Bird and 35 kilometres to the north of Hut Point Peninsula on Ross Island. It contains the hut built in February 1908 by the British Antarctic Expedition of 1907–1909 led by Sir Ernest Shackleton.