We made it up the shaft and to the surface! But night is coming on and it's getting colder.

We could be miles from our space craft. Or have they taken it underground? As it gets colder, the air gets thinner. Every second counts.

Should we split up? We can cover twice the area, but alone we are more vulnerable. Or should we stay together? But the search will take twice as long, and breathing is hard! Or should we do something else?