The australian woman Shannon Leah Fraser stumbled out of the bush on Wednesday morning, reported local media.
The 30-year-old had gone to the Golden Hole swimming spot with two men, including her partner, when she disappeared on 21 September.
She is now recovering in a hospital and is being treated for infected cuts and severe sunburn.
Ms Fraser's companions first raised the alarm after she got separated from them and failed to return to their vehicle, said Queensland Police.
The mother-of-three's disappearance sparked a search operation involving 25 officers from the police and state emergency services.