On Thursday, hundreds of supporters of the Gamil Means No movement rallied in Sydney, Melbourne, Brisbane and Canberra.
Material posted to social media showed hundreds rallying in Sydney, where protesters chanted while marching from Martin Place through the CBD.
At least several dozen gathered on Melbourne’s Spring Street and at Brisbane's Santos Place. Dozens also gathered outside Parliament House in Canberra.
The Gamilaraay Next Generation activist group want Santos to “frack off”, cultural heritage laws amended, for governments to meet with Gomeroi people to “undergo proper consultation” and for the NSW Mining Act of 1992 to be abolished.
Federal Environment Minister Sussan Ley said her decision to approve the Santos project was based on the Commonwealth's expert science committee on coal seam gas.
Dozens protest outside Parliament House in Canberra
"I am satisfied that the conditions, and the staged nature of work in the area, will safeguard the biodiversity of the Pilliga Forest," she said at the time of her announcement.
Resources Minister Keith Pitt said Santos had linked 200 jobs directly to the project with a further 1,300 roles in the construction phase.
The protests came on the same day Australia's plans for a gas-led economic recovery from COVID-19 were criticised in a new report as "digging up our country's past to spite our future".
The report, released Thursday by the Climate Council, said the emissions produced by Australia's gas sector weren't properly being accounted for.