The western end of the plain is marked by the 60 metre high Flagstaff Hill.
The views from Flagstaff Hill were worth the walk up and the large Sundial was interesting.
Flagstaff Hill is on the northern side of the entrance to the island's Delarof Bay.
There has been a flagstaff on top of Flagstaff Hill since 1848, and the current lighthouses were moved to the site in 1878.
Flagstaff Hill is a suburb in the City of Onkaparinga local government area.
The name arose locally in about 1958 and derives from association with Flagstaff Hill.
Flagstaff Hill is where coal was discovered in the late 18th century.
Flagstaff Hill continued to be the home of coal exportation throughout the early 19th century, until the army claimed the land in 1843.
Flagstaff Hill is 735 m (2,450 ft) above sea level.
A number of bungalows were built around Flagstaff Hill.