[1] The town of Wyndham, the area's principal port, lies on its eastern bank at the lower part of the gulf and is approximately 100 kilometres (62 mi) by road west-north-west of Kununurra.
Adolphus Island splits the southern end of the sound with a navigatable channel being found on the western arm.
[6] On 17 September 1819 Philip Parker King on the survey cutter HMS Mermaid, who was mapping the entire north Australian coastline, landed at Lacrosse Island, from where he noticed a "deep opening" to the south.
As the western arm appeared to be of most importance we entered it and, with a strong flood tide, proceeded with great rapidity; as sunset approached we began to look for an anchorage, but found much difficulty on account of the strength of the tides, the great depth of water, and, as I at first thought, the unfavourable quality of the bottom: at last the anchor was dropped close to the south-west shore of Adolphus Island in the entrance of another arm which appeared to trend to the south-east under Mount Connexion.
No-one can regret more than I do, that I am unable to follow this magnificent stream to its mouth, which I have no doubt will be found in Cambridge Gulf – the whole of its waters in that case being in Western Australian territory.
By early 1885 people were arriving at the Cambridge Gulf to move inland in search for gold around Halls Creek, before the port was named as Wyndham in 1886.