Baiyungu elder Hazel Walgar said within her traditional land of the Ningaloo coast there was evidence of trade with groups from other parts of Australia.
"Artefacts from my traditional area, Ningaloo, are found in the Central Australia, artefacts like the marnargee, the baler shell, and we find cutting tools in our area that don't come from here," she said.
"Those artefacts come from inland, from Martu country ...