Orme didn't want to agree, but he had to. After validating that the tunnel
did go beneath the cliff, he told Bronski they had to get back.
'Tomorrow we'll put in a full day. We'll be refreshed. It was the landing that
took everything out of us. Even though we exercised on the Aries during the trip,
we aren't in tiptop shape. Null gravity is insidious; it weakens you after a long
time.'
Bronski said, 'Yes.' His tone indicated that he knew this and Orme knew
that he knew it. But it was better to talk repetitions and banalities than to listen to
the silence. The stars were out now, shining more brightly than in Earth's thick
atmosphere. Being at the bottom of the canyon was like standing at the bottom of
a well. The stars they could see looked baleful, as if they didn't like the presence
of these two aliens.
Orme knew that his reaction was due to his fatigue, the feeling of
insignificance in relation to the towering wall, the eeriness of the entire situation,
the feeling that somewhere down there were beings who could be menacing.
Just how, he didn't know, since Earth people represented no danger to Martians -
if they existed - and there was no reason he could think of why they should
believe two aliens to be dangerous.
But the buried spaceship indicated a very advanced technology, and the
tunnel seemed to mean that the people who had landed had dug into Mars. If
they had managed to survive underground, and they must have been there a
long time, why hadn't they emerged to repair the ship? If, that is, the ship had
been wrecked?
There was no use worrying about such things. Tomorrow or the day after
or a week or two from now would bring the answers.
Nevertheless, he was glad to get back to the lander. Though it wasn't the
most comfortable or roomy of homes, it was still, in a sense, a piece of Earth. He
had no trouble falling asleep, but, in the middle of the night, he woke with a start.
He'd thought he'd heard something hard rapping against the double hull. He got
up and. looked through the ports but could see nothing except darkness on all
sides but one. Stars still moved slowly across the open roof of the canyon. The
rover was a vague bulk which he would have thought a boulder if he hadn't
known it was there.
Then, as he watched, a light sprang from it, a beam that moved down into
the tunnel and then lifted and described a 380-degree arc. After two minutes, the
light went out. Once an hour, as ordered by Danton, it became activated and
swept the area with visible light, infrared, and radar. If anything moved for miles,
it would sound an alarm in the lander and in the Aries.
His sleep the rest of the night was untroubled. The alarm, triggered by a
radio wave from the Aries, awoke him with a, start. It was still dark outside, but
the sky was paling above the top of the canyon. After the necessary reports,
checking the equipment, and breakfast, he and Bronski climbed down on to the
ground. On the way to the base of the cliff, he looked at the grey curve sticking
out of the rubble. If they ran into a dead end in the tunnels, they would start
removing the rocks from around the spaceship. Or, if they didn't find a port or