Picture being trapped on a muddy ledge in total darkness for nine days, starving, your only water dripping from the rocks above. Then rescuers arrive, and the only way out is to be sedated, strapped to a stranger, and dragged unconscious through three hours of flooded jagged tunnels. This was the terrifying reality for 12 boys and their coach in the 2018 Tham Luang cave rescue.

This episode goes inside the mountain to unpack the granular mechanics the global media glossed over: the karst geology, the impossible diving conditions, the medical ethics stretched to the breaking point, and a final climax that nearly killed the rescuers at the finish line.

• The Wild Boars team became trapped two kilometers in when monsoon rains turned the porous limestone cave into raging underground rivers
• Divers faced cold-coffee water with ze ...