CHAPTER 20

"What's that noise, Tom?"

The two cadets were walking through the tunnel when they heard the strange booming roar. Behind them, Sinclair overheard Roger's whispered question and laughed. "That is the sound of the slaves being fed their lunch. They do not know yet that there has been a battle and soon they'll be free!"

"Slaves!" gasped Roger. "What kind of slaves?"

"You shall see. Keep going!" Sinclair prodded the cadets with his ray gun. The tunnel had grown larger and the downward slant of the floor lessened as they pressed forward. The noise ahead of them grew louder and stronger and now they could distinguish occasional words above the din.

"We must pass through the big vault where the slaves are working," said Sinclair. "I would advise you to keep your mouths shut and do as I say!"

Neither Tom nor Roger answered, keeping their eyes straight ahead.

The tunnel suddenly cut sharply to the right and they could see a blaze of light in front of them. The two boys stopped involuntarily, and then were nudged forward by Sinclair's guns. Before them was a huge cavern nearly a thousand yards high and three thousand yards across, illuminated by hundreds of torches. Along one side of the cave a line of men were waiting to have battered tin plates filled from a huge pot at the head of the line. The men were in rags, and every one of them was hardly more than skin and bones. At strategic places around the cavern, Nationalist guards kept their guns trained and ready to fire. They brought up their guns quickly as Tom and Roger entered, and then lowered them again as Sinclair appeared. Every eye turned to the Nationalist leader as he marched across the floor of the cave, Tom and Roger walking before him.

"You see," said Sinclair, "these wretched fools thought my organization was a utopia until they learned that I was no better for them than the Solar Guard. Unfortunately they learned too late and were sent here to dig underground pits for my spaceships and storage dumps."

The small column of three marched across the floor of the cave toward another small tunnel on the opposite side. The slaves were absolutely still, and the guards smiled a greeting at their leader when he passed them.