The spring is down under the lower bluff, and a fire down there won't make much smoke above the upper banks.

We must make one out of drift-wood, but we mustn't use any pine.
That smokes too much.

The fire must be made in the daytime, because at night it would be seen too far.

You boys must do the cooking, while I keep a look-out for Indians, and if any come within sight you can both get in here before they discover you, or if they do see you, they can't find you after you run away from the fire, and they will look for you out in the woods somewhere.

Nobody would think of looking here.