She found herself shooting from the tube like a cork from a bottle. She was floundering upward in a milky sea. Her head emerged into the open. Breathing heavily, she managed to haul herself on to a dry ledge. She was in some sort of a natural underground reservoir. The ceiling was only 2 feet above her. She thought, ‘What if it rains?’ But that thought came from back in Sarawak, where even a distant shower of rain might cause water levels to rise dramatically and drown an unwary speleologist. On Mars there was no danger of rain.
As her pulse steadied, she stared across the phosphorescent pool, whose depth she estimated to be at least 12 metres. Kathi knew that humble classes of aquatic animals emitted light without heat. But was there not also a mere chemical phosphorescence? Had she stumbled on the first traces of Martian life? She could not tell. But lying on the shelf of rock, unsure of how she would ever emerge again to the surface, she told herself that she was detecting a Martian consciousness. She looked about in the dimness: there was nothing, only the solemn slap of water against rock, reflected and magnified by the low roof overhead. Was she not in the very throat of the monster?
She lay completely still, switching off her radio to listen, there, at least a kilometre beneath the surface of the planet. If it had a heart, she was now a part of it.
The situation was somewhat to her liking.
When she switched on her radio, the babble of humanity came to her. They were going to rescue her. Chad was possibly in an adjacent chamber. She was to stay put. Was she okay?
Without deigning to answer that, she reported that the temperature reading was 2 degrees above zero Celsius and that she had taken a water sample. She still had a reserve of 3.6 hours of air. Sure, she would stay where she was. And she would keep the radio on.
She lay on the ledge, perfectly relaxed. After a while she swam in the phosphorescent reservoir. At one corner, water fell from the roof in a slow drip, every drop measuring out a minute.
Raising herself in the water, her fingers detected a crevice in the rock overhead. Hauling herself up, she found she could thrust her arm into a niche. With this leverage she could also wedge a foot in the niche, and so cling, dripping, above the water. By slow exploration, she was able to ease herself into the rock. She cursed the lack of light, and cursed her failed headlight. Inch by painful inch, she dragged herself through the broken rock fissures. She was in total darkness, apart from an occasional glint of falling water drops. She struck her head on rock.
The one way forward was to twist over on her back and propel herself by hands and feet. She worked like that for ten minutes, sweating inside her suit. Then she was able to get on to her hands and knees.
Gingerly she stood up. Hands stretched before her, she took a step forward. Something crackled beneath the flippers of her suit. She felt and brought up a fragment of ice. In so doing, she clipped her headlamp against rock. Feeling forward, she came on sharp rock everywhere. She stood in the darkness, nonplussed. When she stretched her arms out sideways, she touched rock on either side. As far as she could determine, she was trapped in a narrow fissure. In the pitch dark, the fallen rocks were too dangerous to negotiate. So she stood there, unable to move.
At length, with what seemed to her like unutterable slyness, the dimmest of lights began to glow. Slowly the illumination brightened. Coming from a distant point, it showed Kathi that she was indeed standing in the merest crack between two rough shoulders of rock. The floor of this crack was littered with debris. She recognised a vadose passage, formed by a flow of water cutting into the rock.
She summoned up all her courage. With her awe came a cold excitement. She was convinced that she had intruded into a lofty consciousness and that some part of it – whether physical or mental – was now approaching her. Her upbringing had accustomed her to sacred places. Now she must face the wrath or at best the curiosity of something, some ancient unknown thing. She felt her lower jaw tremble as the light increased. There was nowhere she could run to.