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.
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.
Kingston SE, formerly Kingston, is a town in the Australian state of South Australia located in the state's south-east coastline on the shores of Lacepede Bay. It is located about 240 kilometres southeast of the state capital of Adelaide and 138 kilometres north-west of the centre of the city of Mount Gambier.
Lobster sculpture located at the entrance to the town