COAL seam gas activists are preparing to hold "Australia's longest roadside demonstration" spanning more than 2000km and two states this weekend.
Hundreds of protesters will set up placards opposing the mining of the unconventional gas. The placards will be displayed along highways in Queensland and New South Wales on Sunday.
There will be protests at regular intervals in NSW between Newcastle and Tweed Heads, from Forster to Gloucester and between Goondiwindi and Chinchilla in Queensland.
Organiser Peter Small said smaller groups were also planning protests on the Darling Downs and between Sydney and Newcastle, if they can get the numbers.
"When it started, it was just our group in Coonabarabran looking to demonstrate between Narrabri and Coonabarabran - just south of the Pilliga exploration area for (mining company) Santos," he said.
"The concept has grown from there.
"People wanted to help us expand, so we're now covering more than 2000km of roads at the same time, saying the same message.
"The government isn't going to do anything (to stop CSG mining) so we have to do it ourselves."
Mr Small said the event would be an Australian record for the longest demonstration, and could well be a world record.
"I expect it will get even bigger by Sunday," he said.
"The support has been phenomenal."
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