The first reserved seat holder for the Wamba Wemba Aboriginal Corporation in the First Peoples' Assembly has used her maiden speech to ask how the desecration of Indigenous sites continues.

Speaking on Gunditjmara Country last week, as the Assembly gathered to finalise their approach to Treaty negotiations, Wamba Wamba woman Lowana Moore gave her inaugural speech as the reserved seat holder.

Ms Moore became the first reserved seat holder to hold a guaranteed seat in the Assembly without recognition from the state government, after a unanimous decision in March.

"Our ancestors have walked and cared for our Country for thousands of years," Ms Moore said.

"It is now our responsibility to continue in their footsteps and maintain our cultural connection to Country for future generations."

Ms Moore spoke of the development of Murray Downs Resort on which Aboriginal remains had been found, with archaeological evidence showing First Nations people have lived there for more than 30,000 years.

It is likely one of the earliest settled areas on the continent.

During construction of the country club, human remains were found, and for a time were left to swelter on the fairway.

Despite this, the minister at the time used their discretion to not make an emergency declaration of protection of the area, and citing this, the Federal Court rejected an appeal from Wamba Wamba Local Aboriginal Land Council and the Murray River Regional Aboriginal Land Council.

"The devastation on their faces [of relatives] is something you don't forget," Ms Moore said.

"The sense of helplessness, the sense of loss, the mourning of our ancestors."

She noted a notification had been received only recently for a third estate to be built on the site.

"You shake your head, and you wonder: how do they keep getting away with it? What is it that they don't get?" she said.

"Imagine someone trying to develop a resort on the Swan Hill Cemetery site? There would be absolute public outrage."

Ms Moore ended her speech by noting her passion for getting land and social justice outcomes for her people; born out of her experience as a young person.

"Despite the struggles, we as a people will continue on just like our ancestors before us," she said.

"We are excited about dreaming big and getting ready to negotiate a treaty. A treaty that will truly protect and preserve our cultural heritage; that will enable us to create economic ventures that will lay the foundation for our people and support our future."