human
Couldn't we work around the hills to the other fork?
gpt
The grub would run out before we got there.
human
I suppose we couldn't push straight across, leaving Graham until we came back?
gpt
We might, if we had time enough. I believe there's forty miles of this broken country. Look at it!
human
Then what must be done?
gpt
My advice is to look for the second cache.