The two together came to the spot where the first torch had been left, and went on. The rough irregular fissure grew no narrower, but its slope became steeper at every yard.

"God-a-mercy, it likes me not!" murmured Turnpenny, who was filled with superstitious fears in face of the unknown. "Meseems we be going down into the very bowels of the earth, or mayhap lower. Dost fear no goblins? Dost not think we may come upon the Old Smoker?"

"Never a whit, Amos. Why, man, the floor here is wet. Touch it with your hand. And as I live, here are seaweeds and shells! And look; surely that is a glint of light yonder that comes not from our torch. Here is a very pool; duck your head, man; I gave mine a rare crack just then, the roof comes so low. Crawl after me. I smell the sea, Amos; and ah! look! here we are on the shore. Have a care; we must not be spied."

Crawling actually through the water, they found themselves on the shore at a point not far north of the spot where Dennis had first opened his eyes on the island. The hole in the cliff was almost hidden by the overhanging plants. Mirandola had halted; to go through water was not to his taste. Cautiously raising themselves, Dennis and Turnpenny parted the screening leaves and looked out to sea. There, a little distance out, was the vessel that had fired on them. The tide was low; she had had to shift her position further into the main channel. In the little bay which here indented the shore a boat lay on the sand, two Spaniards leaning against its side, keeping guard over it, no doubt, while their comrades were engaged in investing the cave.

"One thing is plain," whispered Dennis; "here at least is a way of retreat should we no longer be able to remain in our cave. And when water fails, we can creep out by the hole in the night time, and fill our buckets at one of the rills that trickle from the cliff."

"Ah! that is something, sir," said Turnpenny, "but I would fain knock those knaves yonder on the head and take their boat. We might then make a shift to row away from this isle."

"A good wish, Amos, but hard to come by. We could not do it in daylight, and methinks the Spaniards would not do us the grace to leave their boat here on the shore for us to make free with at night. But assuredly we can keep a better watch on them here than from the cave above, where we cannot show a head but with great peril; let us therefore return and send one of the maroons hither as a sentinel."

There was great excitement among the men when they were told of this discovery. Though it seemed impossible that the passage to the sea could avail them much, the knowledge that it was open to them gave just that dash of comfort which is all the world to men in extremity. And when, as the day wore on, the enemy's guns began to play regularly on the mouth of the cave, and brought down in front of it great masses of the cliff above, they did not get into a state of panic, but almost gaily made air-holes through the loosely piled earth with their weapons, chuckling at the thought that the besiegers were no doubt flattering themselves with the supposition that the hapless garrison was being gradually entombed.

But it seemed to Dennis that an attempt should be made to turn this strange discovery to account. Clearly it was possible to leave the cave, but supposing they all made their way to the shore, what then? They might take to the woods in the centre of the island, and for a time, perhaps, elude the enemy; but it would only be a matter of days before they must be hunted down. They could not, a mere handful, risk a stand-up fight against a force six or seven times their number. And it was in the highest degree unlikely that the enemy would leave any of their boats on shore during the night. Still, there was just a chance that a boat might be so left, and Dennis arranged that Juan the maroon should go before dark to the exit on the shore, to see what he could discover of the Spaniards' arrangements, and then to steal up the cliff and learn how they encamped during the night.

The night was still young when the maroon returned. He had seen the boat put off, conveying officers to the vessel. Then, waiting until it was dark, he had climbed the cliff, and found that the enemy had formed a camp on the summit immediately above the ledge, at some little distance from the brink. No pickets were posted; the Spaniards had evidently recognized the hopelessness of any attempt to escape either up or down the gully.