An Adelaide woman who went missing at the weekend has been found alive and well after leaving an SOS message in the bush for someone to find.
Deborah Pilgrim, 55, disappeared on Sunday morning in Sedan, about 100km northeast of the city, where she had been camping with friends for a 60th birthday party.
She was found around midnight after a member of the public noticed on his CCTV cameras someone had written SOS in the driveway of his bush block.
He alerted police, who found Mrs Pilgrim on a neighbouring property around midnight.
She was taken to Angaston Hospital but appears to be in good health, SA Police said.