Glen wondered what this movement meant; but it was not until they had ridden for nearly an hour that his unasked questions were answered. Then, as though by magic, so unexpectedly did they appear, a score or more of Indians seemed to spring from the ground and surround them. It was a Cheyenne war-party. Their ponies, under watchful guard, grazed in a slight depression to one side of them, and their scouts kept a keen lookout from a rise of ground beyond.