Margaret Brock Reef

Margaret Brock Reef

Cape Jaffa Lighthouse (circa 1910) showing the full lighthouse installation standing on the reef. The lantern room and keepers accommodation on the left hand side of the image were removed during the 1970s.
Margaret Brock Reef
Geography
Location	Limestone Coast, South Australia[1]
Coordinates	36°57′07″S 139°35′44″E / 36.951874°S 139.595642°E / -36.951874; 139.595642[1]
Highest elevation	2 m (7 ft)[2]
Administration
Australia

Margaret Brock Reef is a reef in the Australian state of South Australia located in the state's coastal waters on its south-east coast about 7 kilometres (4.3 mi) west of the headland of Cape Jaffa and about 27.2 kilometres (16.9 mi) south-west of the town of Kingston SE. It is the site of both a navigation aid which operated as a staffed lighthouse from 1872 to 1973 and as an automatic beacon onward to the present day, and a rock lobster sanctuary declared under state law in 1973. It is named after the barque Margaret Brock which was wrecked there in 1852.