The convoy of some 500 people in 80 vehicles left Hobart today and plans to drive all the way to the proposed mine site in central Queensland, in the Galilee basin, which is 160 kilometres northwest of Claremont or so. At one point the Indian mining magnate was planning to construct the world's largest coal mine, though in recent plans the size has been scaled back.

A quartet of activists including mayor Sparks and husband Badja will meet the convoy in Coffs harbour on Sunday.

Michael McNamara says the aim of the protesters, who want the mine cancelled, is to put pressure on a potential Labor Prime Minister Bill Shorten in the runup to next month's Federal election.

"It's even more urgent now with the recent federal approval of the water management plan by the environment minister after the pressure from right-wing National party MPs in Queensland," he said.

"Australia needs to pull its weight in terms of taking climate action.

"The coal that they dig out of here if it goes ahead will contribute more than some countries do to the impact of global warming."

He said the country is in a "climate emergency".

Mayor Sparks said former Senator Bob Brown will be travelling back through Glen Innes

"We're going to get a few people on the road to wave them through," she said.

She said she is excited about the rally.

"I think this is a good opportunity to stand up and have a say about how we're going to save the planet!"

Protesters will march on Adanis Brisbane headquarters on Easter Monday, but there are no direct actions planned for the convoy.

The McNamaras were heavily involved in coal seam gas activism for years and Badja Sparks recently infuriated Member for New England Barnaby Joyce by protesting his visit in March.