"Goodbye," Johnny said.

"You are a good man," Baba clicked. "A true friend!"

"Baba said you are a good man and a true friend," Johnny whispered.

"Thank you, Baba," the old man said. Then he was gone.

Baba and Johnny began climbing in earnest now. Johnny couldn't let himself get tired. As silently as they could, they went on and on.

They climbed for what seemed an hour. Actually it was fifteen minutes later when they reached the ledge leading to the cave in the rock. They were barely inside when search lights cut through the twilight and began to play on the rock.

The two sat down to rest, but not for long. Soon they were tearing down the pile of rocks at the back of the cave so they could get into the main caverns. They had talked about staying the night within the inner rooms, but decided it was too dangerous. Sooner or later the colonists were bound to drop someone from a helicopter to search for Baba on top of the rock; and there was too great a chance the entrance would be discovered.

Once inside the main caverns, the first job was to make their way through the long passageways to the top of the rock to block the entrance they had made earlier in the day. It took precious time, but they had to do it. They almost didn't make it, for as they were filling in the last stone at the cave mouth they heard the sound of 'copter motors. Johnny grabbed Baba's harness, and down the long winding passageways they went, full tilt.

Soon they were picking their way about the brush near the exit of the long, damp tunnel. Through the green twilight they could see the searchlights brightening New Plymouth Rock. Baba was sniffing the air. Johnny listened carefully for the sound of rhinosaurs or of tanks. There was no evidence of either man or animal.

"We made it, Grandfather Bear!" Johnny said aloud to Baba. "You're safe!"