Brother John gave me a meaningful look. We could see that from here the tunnel opened up into a cavern; a huge chasm of darkness lay below.
I grabbed my pocket-flashlight, and pressed once for the maximum setting. Still could see nothing. I then reached back and unclipped my main torch from my bag. I pointed it downward, turned it on, and waited for darkness to recede.
The strangest effect was produced. For though the light eventually penetrated the enveloping darkness, the ground beneath us seemed much closer than it should given the degree of illumination. It was as if some physical darkness enveloped the space beneath us; not a mere absence of light, but a genuine presence of dark.
Slowly we lowered ourselves into the cavernous space below. When we had unhitched ourselves, Brother John took a reading. The vault was approximately one mile across, but only a few hundred metres high. We struggled to think what could have caused such a strange geological formation. According to the scanner it had a geometrical symmetry that we could not reconcile with the effects of water, gas, or magma. Though impossible this far within the crust, no such octagonal forms seemed plausible without the interference of men.
Suddenly we heard the quick patter of feet. As we swung our lights upon the sound, we illuminated two pale, reptilian beasts, long, low and lean, racing toward us on their hind legs. These leftover relics of time forgotten quickly drew apart before homing in on us. In unison we drew our revolvers.
Brother John rolled and fired at one, wounding it, but alas I was too slow in aiming, and though I killed the second creature outright at the last, in its death throes it dealt me a terrible wound upon my arm. Brother John examined and treated the wound, and we knew it was nothing serious, but all the same the wound would slow me down. Worse still, we now knew that we had every need of fleet feet in this place, for surely we had not stumbled on the only two beasts in this darkest of worlds. No, many more there would be, and perhaps worse things still. And with my shooting arm slung, we were at best one and a half guns strong.
Imperceptibly, from the darkness, several faint green glows appeared. We clasped our revolvers, and stood back to back. Then, from the shadows, they emerged. Tall as no man I had seen, near eight-foot high, five pallid man-like beings emerged, black of eye and bald of head, and extended their ethereal, webbed palms. They were armed with a kind of halberd made of bone, edged with a mineral we did not know. Dimly we could see the outlines of others, holding a defensive line beyond this inner circle, lit by strange, bobbing green lights. All remained absolutely silent, seeming to talk by looks and gestures.
“What are they?” asked John.
“They must have heard the gunfire” I replied.
“That’s not what I asked you! What the hell do you think they are?”
I took a deep breath before speaking. “I think they are very much in control, both of us, and this environment. Their guards are cautious but not fearful, and they were upon us within minutes of the gunfire. To be frank, I feel safer with them than with those beasts in the black.”
“And what if they mean us harm?”
Before I could respond, the largest of the beings first crossed his arms in an X, before raising his finger. Then he pointed to the smallest, and oldest-looking among them. The being opened his mouth, and uttered the first sound we had heard from them. It was deep and rumbling, more feeling than noise. As it ran through us our muscles slackened, our heads dizzied, and we fell to the floor. The last thing I saw was the strange floating lights going out, one by one, until darkness and sleep enveloped me.