Two tourists have been killed on Queensland's Fraser Island and two others critically injured when a troop carrier rolled over.
Authorities say the special four-wheel-drive vehicle was carrying 11 passengers when the accident occurred early on Saturday morning.
A man and woman died at the scene while two other badly injured people were flown from the island.
An ambulance spokesperson said one had been taken to nearby Hervey Bay Hospital while the other would be treated at the Royal Brisbane Hospital.
Six patients - four with neck and back injuries and two with minor injuries - have also been taken to Hervey Bay Hospital.
Fraser Island is a popular trip for groups of backpackers who tour the beautiful sandy hotspot in 4WDs and camp out. The island is also home to a large number of dingoes.