It was a wondrous place, on a very much larger scale than I had imagined. The spoil banks, which represented the thousands of tons removed, had been built up into a great horseshoe around it, which now made a considerable hill. In the concavity of this horseshoe, composed of chalk, clay, coal, and granite, there rose up a bristle of iron pillars and wheels from which the pumps and the lifts were operated. They connected with the brick power building which filled up the gap in the horseshoe. Beyond it lay the open mouth of the shaft, a huge yawning pit, some thirty or forty feet in diameter, lined and topped with brick and cement. As I craned my neck over the side and gazed down into the dreadful abyss, which I had been assured was eight miles deep, my brain reeled at the thought of what it represented. The sunlight struck the mouth of it diagonally, and I could only see some hundreds of yards of dirty white chalk, bricked here and there where the surface had seemed unstable. Even as I looked, however, I saw, far, far down in the darkness, a tiny speck of light, the smallest possible dot, but clear and steady against the inky background.

'What is that light?' I asked.

Malone bent over the parapet beside me.

'That's one of the cages coming up,' said he. 'Rather wonderful, is it not? That is a mile or more from us, and that little gleam is a powerful arc lamp. It travels quickly, and will be here in a few minutes.'

Sure enough the pin-point of light came larger and larger, until it flooded the tube with its silvery radiance, and I had to turn away my eyes from its blinding glare. A moment later the iron cage clashed up to the landing stage, and four men crawled out of it and passed on to the entrance.

'Nearly all in,' said Malone. 'It is no joke to do a two-hour shift at that depth. Well, some of your stuff is ready to hand here. I suppose the best thing we can do is to go down. Then you will be able to judge the situation for yourself.'

There was an annexe to the engine-house into which he led me. A number of baggy suits of the lightest tussore material were hanging from the wall. Following Malone's example I took off every stitch of my clothes, and put on one of these suits, together with a pair of rubber-soled slippers. Malone finished before I did and left the dressing-room. A moment later I heard a noise like ten dog-fights rolled into one, and rushing out I found my friend rolling on the ground with his arms round the workman who was helping to stack my artesian tubing. He was endeavouring to tear something from him to which the other was most desperately clinging. But Malone was too strong for him, tore the object out of his grasp, and danced upon it until it was shattered to pieces. Only then did I recognize that it was a photographic camera. My grimy-faced artisan rose ruefully from the floor.

'Confound you, Ted Malone!' said he. 'That was a new ten-guinea machine.'

'Can't help it, Roy. I saw you take the snap, and there was only one thing to do.'

'How the devil did you get mixed up with my outfit?' I asked, with righteous indignation.

The rascal winked and grinned. 'There are always and means,' said he. 'But don't blame your foreman. He thought it was just a rag. I swapped clothes with his assistant, and in I came.'

'And out you go,' said Malone. 'No use arguing, Roy. If Challenger were here he would set the dogs on you. I've been in a hole myself so I won't be hard, but I am watch-dog here, and I can bite as well as bark. Come on! Out you march!'

So our enterprising visitor was marched by two grinning workmen out of the compound. So now the public will at last understand the genesis of that wonderful four-column article headed 'Mad Dream of a Scientist' with the subtitle. 'A Bee-line to Australia,' which appeared in The Adviser some days later and brought Challenger to the verge of apoplexy, and the editor of The Adviser to the most disagreeable and dangerous interview of his lifetime. The article was a highly coloured and exaggerated account of the adventure of Roy Perkins, 'our experienced war correspondent' and it contained such purple passages as 'this hirsute bully of Enmore Gardens,' 'a compound guarded by barbed wire, plug-uglies, and bloodhounds,' and finally, 'I was dragged from the edge of the Anglo-Australian tunnel by two ruffians, the more savage being a jack-of-all trades whom I had previously known by sight as a hanger-on of the journalistic profession, while the other, a sinister figure in a strange tropical garb, was posing as an Artesian engineer, though his appearance was more reminiscent of Whitechapel.' Having ticked us off in this way, the rascal had an elaborate description of rails at the pit mouth, and of a zigzag excavation by which funicular trains were to burrow into the earth. The only practical inconvenience arising from the article was that it notably increased that line of loafers who sat upon the South Downs waiting for something to happen. The day came when it did happen and when they wished themselves elsewhere.

My foreman with his faked assistant had littered the place with all my apparatus, my bellbox, my crowsfoot, the V-drills, the rods, and the weight, but Malone insisted that we disregard all that and descend ourselves to the lowest level. To this end we entered the cage, which was of latticed steel, and in the company of the chief engineer we shot down into the bowels of the earth. There were a series of automatic lifts, each with its own operating station hollowed out in the side of the excavation. They operated with great speed, and the experience was more like a vertical railway journey than the deliberate fall which we associate with the British lift.

Since the cage was latticed and brightly illuminated, we had a clear view of the strata which we passed. I was conscious of each of them as we flashed past. There were the sallow lower chalk, the coffee-coloured Hastings beds, the lighter Ashburnham beds, the dark carboniferous clays, and then, gleaming in the electric light, band after band of jet-black, sparkling coal alternating with the rings of clay. Here and there brickwork had been inserted, but as a rule the shaft was self-supported, and one could but marvel at the immense labour and mechanical skill which it represented. Beneath the coal-beds I was conscious of jumbled strata of a concrete-like appearance, and then we shot down into the primitive granite, where the quartz crystals gleamed and twinkled as if the dark walls were sown with the dust of diamonds. Down we went and ever down – lower now than ever mortals had ever before penetrated. The archaic rocks varied wonderfully in colour, and I can never forget one broad belt of rose-coloured felspar, which shone with an unearthly beauty before our powerful lamps. Stage after stage, and lift after lift, the air getting ever closer and hotter until even the light tussore garments were intolerable and the sweat was pouring down into those rubber-soled slippers. At last, just as I was thinking that I could stand it no more, the last lift came to a stand and we stepped out upon a circular platform which had been cut in the rock. I noticed that Malone gave a curiously suspicious glance round at the walls as he did so. If I did not know him to be amongst the bravest of men, I should say that he was exceedingly nervous.

'Funny-looking stuff,' said the chief engineer, passing his hand over the nearest section of rock. He held it to the light and showed that it was glistening with a curious slimy scum. 'There have been shiverings and tremblings down here. I don't know what we are dealing with. The Professor seems pleased with it, but it's all new to me.'

'I am bound to say I've seen that wall fairly shake itself,' said Malone. 'Last time I was down here we fixed those two cross-beams for your drill, and when we cut into it for the supports it winced at every stroke. The old man's theory seemed absurd in solid old London town, but down here, eight miles under the surface, I am not so sure about it.'