Koji Suzuki - Dark Water

He had told his family on the morning of the day before setting out that he was going “for a little hike in the mountains”. He had said nothing about exploring limestone caves. Sakakibara had come to pick him up and they had gone as far as the woodland road at the foot of Mt Shiraiwa. There they parked the car and walked three or four miles in the countryside before stumbling upon the entrance to the cave. Sugiyama wondered if Sakakibara had told anyone that he was heading this way. It was unlikely. After all, he had lived alone and had no one to tell. They had made no plans to explore any caves; their original purpose had just been to hike in the mountainside to look for new caves.

Given to worrying at the best of times, his wife would be in quite a state by now. She would no doubt have imagined the worst and called the police a long time ago. Yet how could the police go about searching for them? Their only possible clue would be the car left at the side of the road, although there was little chance of the police even finding the car. Supposing they’d found the car, it was all but inconceivable that any rescue party would come his way. Not only was the limestone cave unmarked on the map, its very existence was unknown.

It was impossible to avoid the conclusion that the chances of rescue from outside were extremely low. The only alternative was for him to find a way out.

Sugiyama could sit and wait for a rescue team or think of some way of getting out by himself. In other words, he had but one real option. Yet any attempt to escape required so much courage it defied the imagination, and this reality was gradually dawning on Sugiyama. He would need courage, and no ordinary courage at that.

Sugiyama may never have thought of a way of escaping had he not discovered the traces left on the walls of the shaft.

A more careful search revealed traces on other parts of the cave as well. The tips of the icicle like stalactites that hung down over the waterside seemed to be chipped, while the flowstone surface was scratched as if brushed by someone’s body. The same kind of damage could be seen in various places around the cave. It occurred to Sugiyama that the interior of the cave had been disturbed by a party of explorers from a caving club or other group. Yet he was not aware of any records of this particular site having been discovered. Caving clubs regularly kept in touch; it would have been big news had any unknown cavern been discovered in the Kanto region.

If the cave hadn’t been disturbed by humans, concluded Sugiyama, it must have been an animal. It occurred to him that a sizeable animal could have strayed into the cave and wreaked havoc here and there. Sugiyama slapped his knee the instant the idea occurred to him. The mouth of the shaft had been blocked by the boulder. This meant that any animal must have crept into the cave via a different route. He could not imagine where such a route could be located. Yet some secret route had to exist somewhere; it was just that he had overlooked it.

Though he vainly searched the periphery of the cavern, he failed to find even the smallest crevice. He was at a loss as to how to account for the evidence.

Turning off his headlamp, he sank deep in thought. Immersed in the pitch darkness, he concentrated his thoughts and began thinking hard. The inside of the cavern was not totally silent. There was the constant sound of dripping water. The drips ran down the stalactites of limestone that hung from the grotto ceiling, and fell plip-plopping on the subterranean lake below. Even in the darkness, it felt like he could see the droplets as they rippled the surface of the lake. The sound amplified the notion of water in his mind until he realized that water was the key to the puzzle. Wasn’t it possible that water was flowing out from the bottom of the subterranean lake? And what were the implications? Opening his backpack and extracting the lens cap of his camera, Sugiyama set it on the surface of the water. The cap began to float from right to left. He tried floating the cap again, but this time in a different place. It moved in the same direction. Wherever he set the cap on the surface of the water, it made its way from right to left. A current of water was flowing at the bottom of the lake. What was more, the current was flowing quite rapidly. Sugiyama finally realized that, although to all appearances the water seemed to be a subterranean lake, it was in fact an underground river.

Since the beginning of November, two typhoons had swept across the Kanto region, bringing heavy rains. As a result the underground water level was higher than usual, and the route leading out from the cave must have sunk under water. Since the water was flowing from right to left, somewhere down toward the left, he concluded, there should be a tunnel through which the water was draining away to the outside world. The current would not be so rapid if the water had no sizeable hole to drain through.

The more he thought about it, the more certain he felt that there was an underwater tunnel. That was all well and good, but he still had to find some way of getting out. Although he had found a route out, it was not as if he could just walk along it.

Sugiyama could not yet summon up the courage to take the first step. Once taken, there was absolutely no turning back, and he could have no way of knowing what awaited him along the way.

How inexpressible would be his joy upon seeing the light of day! When he had been trekking across the mountainside, he noticed that the river winding along the eastern side of the mountain had suddenly vanished. According to Sugiyama’s compass, east was left. It seemed a fair conclusion that the underground water was flowing into a river on the eastern side. Since they had been making in an easterly direction ever since entering the cave, it was also probable that he was by now quite close to the opening from which the water was draining out.

He frantically tried to imagine the brilliance of the light, how he’d stumble outside into open space from his imprisonment in the cave. He had to invoke his courage by picturing the joy of feeling the light of day radiating down from above. Yet paradoxically, the greater his desire to get out of there, the stronger his fear and anguish, lest what he so longed for should be snatched from him just short of the end.

Sugiyama was a good skin diver. It was quite possible for him to dive into the dark waters and make his way into the underwater tunnel by feeling the water on his skin and gauging the direction of the current. He had no way of knowing, however, how far the tunnel extended. Once on the current forward, there was absolutely no way back. If he found no exit, there was no coming back. If he ran out of air before reaching the exit, there was no coming back. And even if he did manage to find an opening, there was no telling whether it would be big enough for a man to get through. Imagine the agony of flailing about before a tiny opening, fighting for life. All the distress a man could suffer would suffocate him at once in that final moment. The futility, the anguish, the despair, the physical agony…

If he just sat and waited here, he would be spared that agony. Wait? Wait for what? Several years ago, there had been an incident in which a cave explorer had been rescued four days after going missing in some limestone caves in Okinawa. He had apparently dropped his flashlight and lost his way. In that case, not only did the rescuers know which caves he had been exploring, but local spelunkers also turned out in force to search for him. Even then it had taken a full four days to find and rescue him.

Sugiyama wondered which of two options offered the better chance of survival. It was inconceivable that a rescue party would arrive within a few days. Diving in search of an outlet was no doubt the better option in terms of his chances for survival. The question was whether he was capable of facing the suffering that may lie ahead.