Five people have been found trapped in a flooded cave in Laos. How will divers get them out?

Rescuers say extraction efforts complicated by low oxygen supplies, dark and narrow spaces, plus more rain

After five of seven people trapped in a flooded cave in Laos were found, footage showed one of the men putting his head in his hands in gratitude at his rescuer’s appearance after a week of uncertainty in the dark chamber.

The mission to find them was itself fraught, but so too will be the extraction.