The ABC has reported that two Traditional Owners will be exposed to possible jail time if they return to a ceremonial camp on Adani's Queensland mine site.
The mining giant has reportedly obtained a Supreme Court order against Wangan and Jagalingou (W&J) man Adrian Burragubba and his son Coedy McAvoy.
Mr Burragubba vowed to continue protesting despite being bankrupted by numerous failed court actions to stop the Adani’s Galilee Basin project.
Since then the Queensland government extinguished native title over 1,385 hectares of Wangan and Jagalingou country for Adani’s proposed coalmine in Queensland’s Galilee Basin.
It did so without any public announcement of the decision.
Mr Burragubba's lawyer Col Hardie said the court order was a "disturbing development" that meant Adani could call police to remove Mr Burragubba and his son from the site.
Mr Hardie said the "only reason" Adani would seek the court order was "to allow them to invoke criminal sanctions against the W&J people that are opposed to their mine".
"Once the order's in place, if they go on to the freeholded part of the lease, they can get arrested by the police and potentially punished by a court for contempt and that punishment could include jail time," he told the ABC.
"Normally it's a civil matter. If someone trespasses on your land, you have the right to sue. Police generally only get involved if there's some form of threat of violence."
An Adani spokeswoman said the company "respect[s] the traditions and culture of Aboriginal people, in particular those of the Wangan and Jagalingou people".
"Accordingly we have engaged every step of the way with Wangan and Jagalingou people and followed all federal and state legislative processes to establish land tenure for the Carmichael Project," she said.
"Having followed all of the legislative processes in securing land tenure this means that we are afforded the same legal protections and expectations as any other landholder.”