Rural Fire Service 66-year-old volunteer firefighter Neville Smith has suffered serious burns in the weekend's blaze, and remains in a critical-but-stable condition at Royal Brisbane Hospital.
Mr Smith's hands, arm, legs, back, face and airways were burned on Friday while he and a colleague fought the fire on Scrub Road.
He was stabilised at the local hospital, intubated and then flown to Brisbane.
"He is expected to remain in the intensive care unit for some time," RFS Commissioner Shane Fitzsimmons told reporters on Saturday.
The truck he was in was destroyed by fire but his colleague was unharmed.
"It is a sobering reminder how dangerous and volatile these firegrounds are and particularly given the underlying drought conditions and the dryness in the vegetation," he said.
Local councillor Bronwyn Petrie, who drove Mr Smith to the local hospital, said he had been battling a blaze on a neighbouring property when the wind suddenly changed and he was engulfed in flames.
"It just changed so quickly," she said.
"We're very lucky there haven't been residents lost and more people injured."
Ms Petrie said she stayed up until 5am battling to protect her property on the edge of the Tenterfield township.
"There were just embers everywhere, you could see embers across the mountains," she said.
"It looked like lots of Christmas lights."