Earlier this week, Musk noted that the Thailand government were considering a few other options, from drilling holes through rock into the cave, to engeneering an inflatable tube, to some sort of Kevlar escape pod. Elon Musk says that their “primary path” is a submarine built out of a liquid oxygen transfer tube as a hull, which should be small enough to fit into the tight spaces of the cave, but also not so heavy so that it can be carried to the trapped children by divers.

Written by Cesar Moya