 Point Ellen is described as being “a grassy mound 8.5m high” that is “bordered by low rocks at its base” and is formed of a “Pleistocene aeolianite, i.e.a “dune limestone.” Two rivers, the Harriet and the Eleanor, flow into the bay with the Harriet being located at the west end and the Eleanor located at the east end.The Harriet River has an estuary coastal lagoon system at its mouth due to the local absence of the “bedrock cliffs” that dominate Kangaroo Island’s coastline.