We went on a tour with an excellent guide.
At the beginning of the tour he made remarks that sounded like a chant. I asked him when they added this chant to the tour and he said around 2000.
Here are some details from wiki: “An Acknowledgment of Country … is a way of showing awareness of and respect for the traditional owners of the land on which a meeting or event may be being held.
“There is no formal wording but usually follows something like “I would like to acknowledge that this meeting is being held on the traditional lands of the (appropriate group) people, and pay my respect to elders both past and present.” Whatever the wording it usually makes reference to the traditional custodians and the elders past and present of those traditional custodians.”