The Lost World MEGAPACK®. Lin Carter

the depth of twenty-five miles the barometric apparatus we had used to measure our depth became thoroughly useless, as the weight of the air in the shaft accumulated beyond that of sea level. We switched over to the manometer, which was inefficient for some reason.

      The air, although dense, was still perfectly breathable and even fresh. I suppose the volcanic shaft above us acted as a colossal chimney, drawing the stale cavern air out and replacing it with fresh air from the surface above. The pervading temperature had grown considerably warmer, but certainly not unendurable. We began shedding our outer garments.

      At this depth, the lava walls were gorgeously colored, and the coating had formed into swelling blisters very curious to see. Crystals of opaque quartz and veins and splatters of once-liquid glass blazed and glittered awesomely in the light of our lamps. It was a fairyland of dazzling light and color…no more gorgeous or fantastic a sight could have met the eyes of Aladdin, when he descended into the caverns of the Wonderful Lamp.

      The profuse wealth of minerals must have thrilled the Professor to the core. He jumped up and down in the bucket seat, peering nearsightedly at the wealth of mineral specimens that moved past our view, scribbling feverishly in his little black notebook, making excited comments to me in a highsqueaky voice.

      We could no longer accurately measure our depth because of the unexpected failure of the manometer; but about an hour later, when we must have reached a depth of more than thirty miles, we became increasingly aware of a most peculiar phenomenon.

      The darkness, which had been as impenetrable as a sea of black ink, began to…lighten.

      At first, we didn’t notice it, because we were still descending through a zone of sparkling quartz and streaked glass. The gradual fading of the eternal dark we consigned to the ten thousand flickering, wandering reflections of our spotlights.

      But when we had passed below that glittering zone, we could no longer fail to notice the ebbing of the midnight dark of the abyss, and its peculiar dawn-like lightening.

      “I wonder if the residual radioactivity could possibly be reacting with chemicals in the rock, causing an effect similar to that of phosphorescence,” the Professor mused.

      I couldn’t say, myself, but was heartily glad for every bit of light I could get. For the shaft had narrowed considerably in the last half-mile, and steering Babe on a safe descent had become increasingly tricky.

      At the depth of about thirty-eight miles, the queer, seemingly sourceless light had strengthened almost to the intensity of late afternoon sunlight. We could clearly make out the veins and contours and variegated hues of the mineral strata as we sank past them, even without the use of artificial light.

      At about forty-two miles down, we began to notice something else that was every bit as exciting to the professor. Rock-mold and spongy lichens grew in scabrous patches along the fissures in the rock walls of the crater shaft, and we descended past a level shelf-like outcropping covered with fantastic paleyellow mushrooms a foot high.

      “Dear Darwin! Just think of it, my boy,” the Professor marvelled in hushed tones. “There is life even at this depth within the earth…!”

      It had grown increasingly warmer until the temperatures within the cabin of the helicopter were swampy and tropical. Sweat poured off us, soaking through our khaki clothing; but the heat was nothing at all like the suffocating warmth I had imagined we would find here beneath the earth’s crust.

      And the air still smelled fresh and moist.

      * * * *

      Although the volcanic shaft narrowed a bit more, somewhere around the depth of sixty or seventy miles beneath the surface, it still afforded sufficient leeway for Babe to continue descending.

      I began to wonder if the shaft had any bottom at all, and entertained wild fantasies of flying directly through the earth until we came out the other side! This was sheerest nonsense, of course; but, still and all, it did begin to seem that we could keep on going down into the earth’s core forever.

      Thankfully, there didn’t seem to be much worry about our running out of fuel. I had loaded Babe with subsidiary gas tanks everywhere subsidiary gas tanks could be tied, strapped, bolted or stored aboard the chopper. And this sort of straight-down descent didn’t really consume much gas at all.

      But after some hours of this, I began to get weary. The nervous tension of inching Babe down, keeping one eye on the walls and the other peeled for unexpected spurs and projections, had begun to wear my strength down.

      The Professor volunteered to spell me at the controls while I napped. I taught him exactly what to do and impressed upon him the importance of keeping his mind on what he was doing and ignoring the scenery.

      “Leaping Lindbergh, my boy!” he said scoffingly. “I was flying before you were born—”

      “Yeah, but not helicopters, I don’t think,” I retorted rather ungrammatically.

      I suppose it was pretty dumb of me to turn the controls over to the living stereotype of the “absentminded professor,” but I was bushed and simply had to get a little shut-eye. And I didn’t think anything much could possibly happen: the shaft was still roomy enough to make it easy for a pilot to steer Babe’s rotors away from dangerous projections, and the descent was actually a lot easier and less risky now that the peculiar luminosity had increased almost to the strength of daylight.

      So I climbed in the back, curled up among the gas tins, pulled my flight jacket over my shoulders, and dozed off.

      * * * *

      I awoke with a sudden start when the world turned upside down with a bang and I flew out the cabin door, which had sprung open.

      I ended up on my back on a mossy bank, head throbbing to the reverberations of the crash. I looked around wildly, wondering if I was still in my dream.

      Whatever it was, this was surely no dream! I have had a few wild ones in my time, but never a dream to match the likes of this baby.…

      Above me stretched an oddly luminous sky, with clouds aplenty but no sun in sight.

      And the sky was not blue, but a peculiar shade of golden green, like nothing I have ever seen before. I looked up—

      And there was a hole in the sky.

      It was almost directly overhead. Round and ragged-edged, and blurry, as if the intervening atmosphere were thick with steamy vapors.

      Of course, I knew what it was.

      The end of the volcanic shaft…

      I looked down at my feet. My boots were sunk in wet loam. Farther up the slope, thick blue moss grew, starred with fleshy blossoms startlingly colored. Salmon pink and sulphur yellow they were, and they resembled sea anemones more than any flowers I had ever seen.

      I raised my eyes.

      Babe lay half sunk in the shoulder of the slope, one of her rotors snapped off near the hub, and the rotorshaft itself still revolving with a flap-flap sound. Her plexiglass cabin was severely dented and cracked by collision with the ground, and one of the two cabin doors was dangling open on broken hinges. That must have been the one I was thrown out of.

      I looked around.

      The chopper had crashed in the slope of a rounded hill near the edge of a wide river or perhaps a lagoon.

      The water was murky, dull green, and bubbly with froth. The fringe of sand about it was dun colored, littered with pebbles and broken shells and bits of wood. The hill rose behind where Babe had come to rest to greet the margin of a forest. It was a most queer looking forest, indeed, made up of tall, feathery trees which looked like an odd cross between bamboo and willow.

      Tree ferns? I thought, my mind spinning crazily.

      The forest was a veritable jungle, and the trees seemed rooted in glaucous, slimy mud. Some of the trees seemed familiar enough—hemlocks and cypresses and soaring redwoods—not too much different from the varieties known to me. But other trees were like nothing