Part Antarctic Specially Protected Area No. 106, Cape Hallett, Northern Victoria Land, Ross Sea, Lat. 72°19−S; Long. 170°16−E

Cape Hallett is located at the southern end of Moubray Bay, Northern Victoria Land, in the western Ross Sea. The protected area occupies ice-free ground of a cuspate spit of low elevation known as Seabee Hook and includes the adjacent western slopes of the north end of the Hallett Peninsula. The Area includes Seabee Hook and the adjacent western slopes up to the crest of the ridge of the north end of the Hallett Peninsula, east of Willett Cove to the margin of the permanent ice sheet. The sea-level boundary is predominantly defined by the coastline of Seabee Hook, and extends south along the east shore of Willett Cove to the southernmost boundary at 72°19−S (approximately 800 metres south of the Moubray Bay coast). The east boundary of the Area follows the edge of the permanent ice sheet near the ridge of Hallett Peninsula.