The Massanuttons extend a long distance and there's nothing to keep scouts and spies from climbing them at other places.

We'll go away from here." He gave the order.

They rose and crept as softly as they could through the snow and bushes down the side of the mountain.

Harry looked back occasionally, but he saw no faces appear on the crest.

Soon he heard Langdon who was beside him laughing softly to himself.
"What's the matter, Tom ?" he asked.
"Harry, if I could take my pistol and shoot straight through this mountain the bullet when it came out on the other side would hit a soldier in blue clothes, going at the same rate of speed down the mountain." "More than likely you're right, Tom, if they're sensible, and that man Shepard certainly is." Further down they met some of their own men climbing up.