And then came the closing of the pit. As Nature slowly closes a wound from below upwards, so does the Earth with extreme rapidity mend any rent which is made in its vital substance. There was a prolonged high-pitched crash as the sides of the shaft came together, the sound, reverberating from the depths and then rising higher and higher until with a deafening bang the brick circle at the orifice flattened out and clashed together, while a tremor like a small earthquake shook down the spoil banks and piled a pyramid fifty feet high of debris and broken iron over the spot where the hole had been. Professor Challenger's experiment was not only finished, it was buried from human sight for ever. If it were not for the obelisk which has now been erected by the Royal Society it is doubtful if our descendants would ever know the exact site of that remarkable occurrence.
And then came the grand finale. For a long period after these successive phenomena there was a hush and a tense stillness as folk reassembled their wits and tried to realize exactly what had occurred and how it had come about. And then suddenly the mighty achievement, the huge sweep of the conception, the genius and wonder of the execution, broke upon their minds. With one impulse they turned upon Challenger. From every part of the field there came the cries of admiration, and from his hillock he could look down upon the lake of upturned faces broken only by the rise and fall of the waving handkerchiefs. As I look back I see him best as I saw him then. He rose from his chair, his eyes half closed, a smile of conscious merit upon his face, his left hand upon his hip, his right buried in the breast of his frock-coat. Surely that picture will be fixed for ever, for I heard the cameras clicking round me like crickets in a field. The June sun shone golden upon him as he turned gravely bowing to each quarter of the compass. Challenger the super scientist, Challenger the arch-pioneer, Challenger the first man of all men whom Mother Earth had been compelled to recognize.
Only a word by way of epilogue. It is of course well known that the effect of the experiment was a world-wide one. It is true that nowhere did the injured planet emit such a howl as at the actual point of penetration, but she showed that she was indeed one entity by her conduct elsewhere. Through every vent and every volcano she voiced her indignation. Hecla bellowed until the Icelanders feared a cataclysm. Vesuvius blew its head off. Etna spewed up a quantity of lava, and a suit of half-a-million lira damages has been decided against Challenger in the Italian Courts for the destruction of vineyards. Even in Mexico and in the belt of Central America there were signs of intense Plutonic indignation, and the howls of Stromboli filled the whole Eastern Mediterranean. It has been the common ambition of mankind to set the whole world talking. To set the whole world screaming was the privilege of Challenger alone.