A man and a woman have been airlifted to hospital in a critical condition after being trapped inside their vehicles when a mini bus and car collided south of Brisbane.
Paramedics were called to the scene about 10:15am after the bus collided with a Mazda on Mundoolun Road near Logan.
Queensland Ambulance Service said it has treated 24 patients at the scene and transported 19 of them to hospital.
The male driver of the mini bus was airlifted to the Princess Alexandra Hospital in a critical condition, while the female Mazda driver was airlifted to the Gold Coast University Hospital.
In a statement, LifeFlight said the woman was aged in her 20s and suffered "multiple traumatic injuries".
Authorities said both the male driver of the mini bus and the female driver of the car had been trapped into their vehicles as emergency services worked to free them.
Queensland Ambulance senior operations supervisor Steve Clarke said the two people in critical conditions were trapped in their vehicles for "well over an hour".
Mr Clarke said the people involved in the accident all had their seat belts on and were of a wide age range.
"The youngest person we transported was a 13-year-old boy, just with minor injuries … bruises and abrasions and around what appeared to be probably possibly 65 to 70 years of age," he said.
He said multiple agencies, including the Queensland Police Service and the Queensland Ambulance Service worked together to take the patients to hospital as quickly as possible.
"I think considering the number of patients and the remoteness of Mundoolun Road … it's quite a significant amount of time to get to a tertiary hospital by road," he said.
Eight patients were transported in a stable condition to Logan Hospital, while another nine patients were taken to Brisbane's Princess Alexandra Hospital in a stable condition.
Two rescue helicopters have been dispatched as well as the High Acuity Response Unit and Critical Care Paramedics.
The Forensic Crash Unit is investigating.
Mr Clarke urged people to slow down on the roads and be careful to avoid this kind of accident.
"You never know [what] is just around the corner," Mr Clarke said.
"There's an accident waiting to happen and we don't want that to happen to anybody in the community."
