“What can there be in there?” asked Miyiko with a sigh, never once taking her eyes off the door and its haughtily gleaming gold symbols. “It seems to be laughing at us… ‘I won’t let you in, I won’t tell you anything!’ “

“What did you see in the cupboards you gamma-rayed in the second cave?” asked Veda, driving away her primitive and useless chagrin at this unexpected obstacle.

“Drawings of machines, books printed on metal sheets instead of on the old-fashioned paper made from wood. Then there was something that looked like rolls of films. some sort of lists, stellar and terrestrial maps. In the first hall there are samples of machines and in the second there are the technical documents belonging to them and in the third there are, well, what can I call them? — historical relics and the valuables of the period when money still existed. It all follows the usual scheme.

“Where are the things that we regard as being valuable? The loftiest achievements of man’s spiritual development — science, art, literature?” exclaimed Miyiko.

“I hope they’re behind that door,” answered Veda, calmly, “but I should not be at all surprised if there were weapons there.”

“What? What did you say?”

“Weapons, armaments, the means of slaughtering masses of people in the shortest possible time. I don’t think that such an assumption is either fantastic or pessimistic!”

Little Miyiko thought it over for a while and then said:

“Yes, that seems to be quite regular if you think of the object of this cache. The chief technical and material values of the Western civilization of those days are hidden here. What did they regard as fundamental? If the public opinion of the planet as a whole or even of nations or of a group of countries did not then exist? The necessity or the importance of anything at any given moment was decided by the ruling group of people who were not always competent to judge. That is why the things here were not really the most valuable possessions of mankind but those things that the given group deemed valuable. They tried to preserve chiefly machines and, possibly, weapons, not realizing that civilization is built up historically, like a living organism,” added Miyiko, thoughtfully.

“Yes, by the growth and acquisition of working experience, knowledge, techniques, stores of materials, pure chemical substances and buildings. The restoration of high civilizations would have been impossible without highly durable alloys, rare metals, machines with a high productivity and great precision. If all these things were destroyed where would they be able to get them from and where would they get the experience and ability to build complicated cybernetic machines capable of satisfying the needs of thousands of millions of people?”

“It would have been just as impossible to return to a pre-machine age civilization, like that of antiquity, although some people did dream of it.”

“Of course. Instead of the civilization of antiquity they would have been faced with a terrible famine. Those were individualist dreamers who did not want to understand that history does not turn back.”

“I’m not insisting that there are armaments in there,” said Veda, “but there is every reason to suppose there are. If the men who devised this cache made the mistake that was typical of their day in confusing culture and civilization and ignoring the absolute necessity of training and developing a man, they would certainly not have seen the vital necessity for preserving works of art, literature or research far removed from current needs. In those days science was divided into useful and useless sciences and no thought was given to their unity. There were branches of art and science that were regarded as being merely pleasant but by no means an essential or even useful accompaniment to the life of mankind. Here, in this cave, the most important things are preserved, that’s why I think of weapons, no matter how foolish and naive that may seem to us today.”

Veda stopped talking and stared at the door.

“Perhaps that’s just a cipher lock and we can open it by listening to it with a microphone,” she said, suddenly, walking over to the door. “Shall we risk it?”

Miyiko jumped between her friend and the door.

“No, Veda, why take such a foolish risk?”

“It seems to me that the roof of this cave is very insecure. We’ll go away from here and we’ll never have a chance to come back. Listen!..”

A diffused and distant sound from time to time penetrated into the cave in front of the door. It came sometimes from below, sometimes from above.

Miyiko, however, was adamant, she stood with her back to the door and her arms outstretched.

“You think there are weapons in there, Veda. If there are they must be well protected. No, no… it’s an evil door, like many others.”

Two days later a portable X-ray reflector screen to study the mechanism and a focussed high-frequency radiator for the molecular destruction of parts of the door were brought into the cave. They did not, however, have time to set their apparatus to work.

Suddenly an intermittent roar resounded through the caves. Strong earth tremors underfoot sent the people who were in the third cave running instinctively to the exit.

The noise increased until it became a dull rumble. The whole mass of fissured rock was apparently settling along the line of the fault at the foot of mountains.

“Save yourselves, everybody get out,” shouted Veda and her people ran to the robot cars, directing them towards the entrance to the second cave.

Hanging on to the cables of the robots they scrambled out of the well. The noise and the tremors of the stone walls followed close on their heels and, at last, overtook them. There came a fearful crash as the walls of the second cave tumbled into the abyss that had formed where the wall had been seconds before. The air blast literally carried the people together with a shower of dust and rubble into the first cave. There the archaeologists threw themselves on the floor and awaited death.

The clouds of dust began to subside. Through the dusty haze it could be seen that the stalagmites and the niches had not changed their form. The former grave-like silence returned to the caves.

Veda came to and stood up, trembling from the reaction. Two of her assistants took hold of her but she shook them off impatiently.

“Where’s Miyiko?”

Her friend was leaning against a low stalagmite carefully wiping the dust from her neck, ears and hair.

“Almost everything has been lost,” she said in answer to an unasked question. “The impassable door will remain closed under a four-hundred-metre thick layer of stone. The third cave has been completely destroyed but the second can be excavated. There and in this cave are the things of greatest value to us.”

“You’re right.” Veda licked her dry lips. “We were wrong in dallying and being over-careful. We should have foreseen the fall.”

“You had only unfounded instinct to go on. But there’s nothing to worry about, we would hardly have tried to prop up those masses of rock for the sake of very doubtful treasures behind that closed door. Especially if it is full of worthless weapons.”

“But suppose there are works of art there, inestimable human creations? We could have worked faster!”

Miyiko shrugged her shoulders and led the depressed Veda in the wake of their companions, out into the magnificence of a sunny day, to the joy of clean water and an electric shower to drown all pain.

As was his habit, Mven Mass strode bade and forth in the room that had been allotted him on the top floor of the History House in the Indian Section of the northern inhabited zone. He had arrived there but two days before after having finished work in the History House in the American Section.