The Mysterious Island

Ayrton found without difficulty the entrance to Dakkar Grotto, and paused for a moment at the last rock before it. “The iron boat should be there,” said the engineer. “It is here, Captain Harding,” replied Ayrton, drawing towards him the fragile craft, which was protected by the arch of the vault. “On board, Ayrton!” The two colonists stepped into the boat. A slight undulation of the waves carried it farther under the low arch of the crypt, and there Ayrton, with the aid of flint and steel, lighted the lamp. He then took the oars, and the lamp having been placed in the bow of the boat, so that its rays fell before them, Cyrus Harding took the helm and steered through the shades of the grotto. The “Nautilus” was there no longer to illuminate the cavern with its electric light. Possibly it might not yet be extinguished, but no ray escaped from the depths of the abyss in which reposed all that was mortal of Captain Nemo. The light afforded by the lamp, although feeble, nevertheless enabled the engineer to advance slowly, following the wall of the cavern. A deathlike silence reigned under the vaulted roof, or at least in the anterior portion, for soon Cyrus Harding distinctly heard the rumbling which proceeded from the bowels of the mountain. “That comes from the volcano,” he said. Besides these sounds, the presence of chemical combinations was soon betrayed by their powerful odor, and the engineer and his companion were almost suffocated by sulphurous vapors. “This is what Captain Nemo feared,” murmured Cyrus Harding, changing countenance. “We must go to the end, notwithstanding.” “Forward!” replied Ayrton, bending to his oars and directing the boat towards the head of the cavern. Twenty-five minutes after entering the mouth of the grotto the boat reached the extreme end. Cyrus Harding then, standing up, cast the light of the lamp upon the walls of the cavern which separated it from the central shaft of the volcano. What was the thickness of this wall? It might be ten feet or a hundred feet—it was impossible to say. But the subterranean sounds were too perceptible to allow of the supposition that it was of any great thickness. The engineer, after having explored the wall at a certain height horizontally, fastened the lamp to the end of an oar, and again surveyed the basaltic wall at a greater elevation. There, through scarcely visible clefts and joinings, escaped a pungent vapor, which infected the atmosphere of the cavern. The wall was broken by large cracks, some of which extended to within two or three feet of the water’s edge. Cyrus Harding thought for a brief space. Then he said in a low voice,— “Yes! the captain was right! The danger lies there, and a terrible danger!” Ayrton said not a word, but, upon a sign from Cyrus Harding, resumed the oars, and half an hour later the engineer and he reached the entrance of Dakkar Grotto.