A woman has been found alive after being stranded for almost two weeks in the Australian outback.

52-year-old Tamra McBeath-Riley is being treated for dehydration and exposure in hospital after she was discovered late on Sunday.

Rescuers are continuing to search for her partner Claire Hockridge and friend Phu Tran - who were last seen on November 19th.

All three had gone for an afternoon out of Alice Springs before their car became bogged in a riverbed.

ABC News reports that they remained by the car for three days – with supplies made up of six litres of water, 10 cans of iced vodka, a packet of biscuits and some beef noodles.

They dug a hold underneath the car to shelter from temperatures of 40C during the day and slept in the car by night.

They eventually left the car when their supplies ran out, leaving a note on the car and finding a watering hole about a mile away.

Salt flats are seen near Alice Springs, 28-11-2013. Image: Anthony Devlin/PA Archive/PA Images

Ms McBeath-Riley decided to stay there with her Staffordshire terrier, for fear the dog would not survive a longer trek.

Meanwhile, her two companions began a 19km trek towards a nearby highway, armed with a GPS device and a compass.

The pair was carrying six litres of water; however, they had very little food.

They planned to avoid the desert heat by walking at night.

Ms McBeath-Riley said it was worrying to hear that her companions had not been rescued yet.

“When the helicopter found me, I thought that Claire and Phu had reached the highway,” she said.

“That was my immediate thought. So to find that's not the case is worrying.

“I'm sure he won't want to go four-wheel driving with us ever again.”

Rescuers were able to find Ms McBeath-Riley after a cattle rancher spotted tyre tracks in an area that had not been searched yet.

Rescuers are continuing to look for her two friends, but Police Superintendent Pauline Vicary said only one set of footprints has been found so far.

She added: “It's quite a diverse terrain. There's sandy dunes, there's hard clay, there's areas of dense trees, but there are also rocks and ranges in the area.”