He kept his place easily, a strong galloping grey mare at his hip, and from time to time tossed his head to the side to take stock of his followers.

And so they dipped out of sight beyond the next swell of ground.
Alcatraz recovered from his amazement to start in pursuit.

This was a mystery worth solving.

Moreover, the moment he made sure that these were not man-owned creatures they had become inexplicably dear to him and as they disappeared his heart grew heavy.

His running gait carried him quickly in view.