Hippy held up his hand for silence, and listened.
"Two gangs are at it and they must be shooting at each other.

I'm going out to have a look!" cried Hippy.
"Look! Look!" cried Emma, whose curiosity had led her to follow Lieutenant Wingate.
Men were seen running down below them.

On the opposite mountainside, just across the narrow valley that lay a short distance from the mouth of the cave, they saw skulking figures.

Now and then one would drop to his knees and shoot at the fleeing figures in the valley.
The fleeing men in the valley, after reaching the positions they were seeking, faced their adversaries on the mountainside and began firing up at them.
"It is the feud!" cried Miss Briggs.
"That's right.

I have it!" exclaimed Hippy.