Rescue teams are set to begin an attempt to evacuate an American explorer trapped 3,400 feet (1,040m) deep underground in a cave in southern Turkey.
Mark Dickey, a 40-year-old experienced caver, suddenly became ill with bleeding in his digestive tract earlier this month during an international exploration mission in the Morca cave in the Taurus mountains. More than 150 rescuers from across Europe have been working to save him since.
