A pregnant heifer has had a lucky escape after falling three metres into a mine shaft in South Australia's Barossa region. newsiviewlistenLoading ABC NewsNews HomePregnant heifer rescued from disused mine shaft in South Australia's BarossaShareShare articlePregnant heifer rescued from disused mine shaft in South Australia's BarossaBy Isabella Kelly. The heifer was winched out of the mine shaft before happily wandering away.