A man in his late 30s claiming to have been lost for three days has been found in Lerderderg State Park, north-west of Melbourne.
At around 1pm bushwalkers found the Greendale man dehydrated with suspected hypothermia.
The man told police he had arrived at the park without a phone, food or water on Wednesday and had been lost ever since.
He was taken by helicopter to the Alfred Hospital and remains in a serious but stable condition.