The oxygen levels are getting low.
This seems like a solvable problem, using ECLSS technology. Get some LiOH canisters and oxygen tanks in there. Also, Elon has sent some of his tunneling engineers to see if they can help.
[Update a couple minutes later]
Alan Boyle has the story on the Boring Company and SpaceX support. The former would presumably be tunneling, while the later would provide life support based on Dragon technology.
Elon has gone full superhero.
[Update a while later]
This visually helps pic.twitter.com/MyX2YPbybq
— Rome Strach (@romn8tr) July 6, 2018
[Update Saturday afternoon]
Elon is building a mini-submarine, designed to fit through the tunnels, at SpaceX HQ to fly to Thailand.
Thought their politics suck, The Guardian is providing good live blogging of the operation.
There were questions in comments how they got there. Here is Bridget Johnson’s story, including how the Buddhist monk training of the coach helped get them through.