“Are you safe, are you safe!” he shouted.

But there was no answer. The swinging rock shut the sound of voices away. Jack beat on the rock, he tried to heave it as he had seen Ranni do, and Mafumu did the same. But neither boy could find the secret balance of the rock, and it stayed where it was, colossal in the moonlight, towering above them as they shouted and hammered on it.

And then, behind the rock, the great door slid back! Jack and Mafumu heard it, and fell silent, listening. What was happening?

What indeed? When the door slid back, the little company in front of it stared with wide eyes into a great hall-like cave. It was lighted by glowing lamps, and a wide flight of steps led downwards for a little way. Up these steps came the Folk of the Secret Mountain, dressed in their flowing robes, and carrying strange yellow wands which glittered from top to bottom.

The leader was a very tall man with a bright red beard and gleaming eyes. He spoke to Ranni in language rather like that used by Mafumu. Ranni understood some of it.

“He wants us to follow him,” Ranni said to Pilescu. “Got your gun, Pilescu?”

“Yes,” said the big Baronian. “But it’s no use using it, Ranni. There are too many of them. Put your gun away for the moment, and we’ll see what happens. We are in a nice mess now. Only Jack and Mafumu are safe!”

That was a strange journey into the heart of the mountain. Big carved lamps glowed all the way, lighting up enormous flights of steps, great walls, and high rocky ceilings.

“The mountain is full of hollows which these people have made into halls and rooms,” said Ranni in a low voice to Pilescu. “Isn’t it amazing? Look at those great pictures drawn in colour on the walls! They are strange but very beautiful.”

The children gazed in wonder at the great coloured pictures on the rocky walls of the mountain-caves. Lamps were set cleverly to light up the pictures so that the men and animals in them seemed almost alive. The Secret Mountain was indeed a marvellous place!