The context of the following conversation is Cameron hammered their way home from inside of a dark tunnel so that they could survive.:
Cameron says Do you know which way our house is?.
The friend responds I think it's east..
Cameron responds I'd better start digging, we've been in this tunnel all day and it will be dark soon..
The friend responds Yeah, don't want to get caught out at night..
Cameron responds What was that?.
The friend responds I don't know, dig faster!.