Thanks William, Fred, Tom, Ray and Chris.
The man was the caretaker for the tortoises. He was showing off a bit to our small group; he stepped over the low wall and walked up to this tortoise. Obviously, the tortoise recognized him and stretched out his neck so the man would scratch it- which he did. Then the man put his arm around the animal and gave him a hug.
Note: we were not permitted inside the containment area.
Charlie