. >> reporter: it's organizers call the ghama festival the davos forum of the aboriginal world, a chance to exchange ideas relevant to indigenous australians. this ceremony, performance, art, and discussion among indigenous and nonindigenous from all walks of life. >> ghama is a name for two waters coming together and mixing. it can represent the intim nous and the non-intim nous people coming together and creating new life and learning about the knowledge. >> the festival comes as indigenous affairs are high on the agenda. a campaign is under way to change the 100-year-old constitution. it reads as if australia was uninhabited when european settlers arrived, making no mention of aboriginal settlers, and allows laws discriminating on the basis of race. >> as an aboriginal person, the way the current constitution is written, is an element of mistrust and disrespect. i can't see reflected in there a sense of invitation and hope for us. a research um is planned to -- referendum is planned to change t. >> this is an opportunity to take the national founding document and catch it up to where