Penkawr was not here now. But he wouldn’t have had time to go far. The smile on Carse’s face was not pleasant as he went through the doorway.

In the outer chamber he suddenly stopped dead. There were things here now—big strange glittering objects—that had not been here before.

Where had they come from? Had he been longer in that bubble of darkness than he thought? Had Penkawr found these things in hidden crypts and arranged them here to await his return?

Carse’s wonder increased as he examined the objects that now loomed amid the mail and other relics he had seen before. These objects did not look like mere art-relics—they looked like carefully fashioned, complicated instruments of unguessable purpose.

The biggest of them was a crystal wheel, the size of a small table, mounted horizontally atop a dull metal sphere. The wheel’s rim glistened with jewels cut in precise polyhedrons. And there were other smaller devices of linked crystal prisms and tubes and things built of concentric metal rings and squat looped tubes of massive metal.

Could these glittering objects be the incomprehensible devices of an ancient alien Martian science? That supposition seemed incredible. The Mars of the far past, scholars knew, had been a world of only rudimentary science, a world of sword-fighting sea-warriors whose galleys and kingdoms had clashed on long-lost oceans.

Yet, perhaps, in the Mars of the even farther past, there had been a science whose techniques were unfamiliar and unrecognizable?

“But where could Penkawr have found them when we didn’t see them before? And why didn’t he take any of them with him?”

Memory of Penkawr reminded him that the little thief would be getting farther away every moment. Grimly gripping the sword, Carse turned and hurried down the square stone corridor toward the outer world.

As he strode on Carse became aware that the air in the tomb was now strangely damp. Moisture glistened on the walls. He had not noticed that most un-Martian dampness before and it startled him.