Thai cave rescuers face race against time Dwindling oxygen levels and forecasts of heavy rain are adding to pressure on authorities trying to work out a rescue plan for 12 boys and their football coach trapped in a flooded cave in Thailand THAILAND Bangkok 300km 200 miles Tham Luang cave complex Doi Nang Non mountain 1,276m Pong Pha Group found in cave under this point Main entrance Former Thai navy diver dies while returning used air tanks to Chamber 3 Cave widens again Pattaya Beach Smallest section Cave widens T-Junction Tunnel narrows to around one metre high Chamber 3 Operation base Chamber 2 Entrance Person to scale Cross-sections of cave taken from 1986 survey Group of 12 boys and football coach found perched on rock shelf in small chamber about 4km from cave mouth 200m 650ft Static rope Full-face mask Compressed air bottle Boy’s bottle Tether to diver Teaching boys how to swim and use breathing apparatus so they can be escorted out of cave by rescue divers, is thought to be most realistic option Picture: Google Earth Sources: French Federation of Speleology, British Cave Rescue Council, BBC © GRAPHIC NEWS