The limestone bar

Across the river mouth, a natural limestone rockbar once separated the ocean from the fresh water.

In the 1890s, much of the rockbar was removed as the inner harbour was developed.

Walk around the port side of the Maritime Museum until you reach the boardwalk. The rocky section you can see just beneath the building is part of the former limestone rockbar.

The remnant limestone rockbar, visible beneath the Maritime Museum.
^{Courtesy Museums Without Walls 2022}

Top image: Fremantle Harbour Works Plan showing progress of the development at 30 June, 1900.
^{Courtesy State Records Office of Western Australia, Cons 1647 Item 7521}