TWO tourists died in a horror crash on the Sunshine Mwy on Saturday.
The men, both from interstate, were killed when their 4WD went out of control at the Yandina-Coolum roundabout shortly after 10pm.
The men's wives, who were in the vehicle with them, survived the accident.
The two couples are believed to have been travelling together on a round-Australia trip and were heading to their Noosa accommodation when the crash happened.
It is believed a lack of local knowledge may have meant the driver, a 63-year-old West Australian man, was unaware of the roundabout and did not see it until it was too late.
He was killed instantly and one of the rear seat passengers, a 69-year-old South Australian man, also died at the scene.
Their partners, a 54-year-old WA woman and a 68-year-old SA woman, suffered serious but non life-threatening injuries and were taken to Nambour General Hospital.
A Tewantin motorist, who came across the crash, described the scene as "eerie".
"There was a bit of mist or fog around," he said.
"As soon as I saw the wreckage I knew it was a fatal ... there was debris all over the road."
Anyone with information that could assist police should contact Crime Stoppers on 1800 333 000 or crimestoppers.com.au.